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Message boards : General discussion : Happy Palindrome Day!

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Nita
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Joined: 14 Dec 18
Posts: 23
ID: 1085395
Credit: 451,612,218
RAC: 22,530
Discovered 2 mega primesFound 1 prime in the 2020 Tour de PrimesFound 1 mega prime in the 2020 Tour de Primes321 LLR Silver: Earned 100,000 credits (284,548)ESP LLR Gold: Earned 500,000 credits (522,663)PPS LLR Ruby: Earned 2,000,000 credits (3,260,653)PSP LLR Amethyst: Earned 1,000,000 credits (1,113,635)SoB LLR Gold: Earned 500,000 credits (554,530)SGS LLR Sapphire: Earned 20,000,000 credits (21,800,862)321 Sieve Ruby: Earned 2,000,000 credits (2,238,888)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (501,355)PPS Sieve Gold: Earned 500,000 credits (620,264)AP 26/27 Jade: Earned 10,000,000 credits (18,727,176)GFN Double Silver: Earned 200,000,000 credits (401,987,643)
Message 137067 - Posted: 1 Feb 2020 | 18:37:52 UTC

Tomorrow's date is 02022020! A palindrome! How often does a thing like this happen?

Profile NickProject donor
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Joined: 11 Jul 11
Posts: 882
ID: 105020
Credit: 1,318,826,036
RAC: 50,004
Discovered 3 mega primesFound 5 primes in the 2020 Tour de PrimesFound 2 mega primes in the 2020 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,020,701)Cullen LLR Sapphire: Earned 20,000,000 credits (20,174,451)ESP LLR Jade: Earned 10,000,000 credits (10,808,484)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (15,107,355)PPS LLR Sapphire: Earned 20,000,000 credits (20,151,511)PSP LLR Sapphire: Earned 20,000,000 credits (20,372,576)SoB LLR Sapphire: Earned 20,000,000 credits (21,169,287)SR5 LLR Jade: Earned 10,000,000 credits (10,194,757)SGS LLR Jade: Earned 10,000,000 credits (13,886,073)TRP LLR Sapphire: Earned 20,000,000 credits (20,307,419)Woodall LLR Sapphire: Earned 20,000,000 credits (22,371,625)321 Sieve Sapphire: Earned 20,000,000 credits (20,380,527)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (744,531)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,007,004)PPS Sieve Double Gold: Earned 500,000,000 credits (563,813,452)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,181)AP 26/27 Sapphire: Earned 20,000,000 credits (20,845,708)GFN Double Silver: Earned 200,000,000 credits (448,137,395)
Message 137068 - Posted: 1 Feb 2020 | 18:41:57 UTC - in response to Message 137067.

Tomorrow's date is 02022020! A palindrome! How often does a thing like this happen?

And it is groundhog day!
Best to fill the day with good things on the off-chance you get stuck there.

Kellen
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Joined: 10 Jan 18
Posts: 457
ID: 967938
Credit: 1,339,357,863
RAC: 13,834
Discovered 2 mega primes321 LLR Amethyst: Earned 1,000,000 credits (1,046,831)Cullen LLR Ruby: Earned 2,000,000 credits (4,120,978)ESP LLR Ruby: Earned 2,000,000 credits (3,231,650)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,649,553)PPS LLR Jade: Earned 10,000,000 credits (17,577,050)PSP LLR Amethyst: Earned 1,000,000 credits (1,620,415)SoB LLR Jade: Earned 10,000,000 credits (11,021,129)SR5 LLR Turquoise: Earned 5,000,000 credits (5,127,306)SGS LLR Sapphire: Earned 20,000,000 credits (20,000,002)TRP LLR Sapphire: Earned 20,000,000 credits (20,000,236)Woodall LLR Sapphire: Earned 20,000,000 credits (20,017,137)321 Sieve Sapphire: Earned 20,000,000 credits (20,000,569)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,006,424)PPS Sieve Sapphire: Earned 20,000,000 credits (42,292,566)AP 26/27 Sapphire: Earned 20,000,000 credits (40,001,442)GFN Emerald: Earned 50,000,000 credits (95,192,575)PSA Double Amethyst: Earned 1,000,000,000 credits (1,000,000,000)
Message 137069 - Posted: 1 Feb 2020 | 18:46:58 UTC - in response to Message 137067.

Tomorrow's date is 02022020! A palindrome! How often does a thing like this happen?


Nice catch! I think the next one will be 12022021, then 22022022 (assuming you use ddmmyyyy and not mmddyyyy), but after that I think the next one is 03022030, so they are definitely quite sparse!

If I have missed any, please post. Now I want to mark these on the calendar :)

Ken_g6Project donor
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Joined: 4 Jul 06
Posts: 915
ID: 3110
Credit: 183,164,814
RAC: 4,009
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,010,094)Cullen LLR Ruby: Earned 2,000,000 credits (2,022,806)ESP LLR Amethyst: Earned 1,000,000 credits (1,193,202)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (767,102)PPS LLR Jade: Earned 10,000,000 credits (17,537,174)PSP LLR Ruby: Earned 2,000,000 credits (4,060,731)SoB LLR Ruby: Earned 2,000,000 credits (3,860,053)SR5 LLR Ruby: Earned 2,000,000 credits (2,061,736)SGS LLR Amethyst: Earned 1,000,000 credits (1,923,102)TPS LLR (retired) Bronze: Earned 10,000 credits (19,376)TRP LLR Ruby: Earned 2,000,000 credits (2,520,745)Woodall LLR Ruby: Earned 2,000,000 credits (2,021,413)321 Sieve Ruby: Earned 2,000,000 credits (2,915,071)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,584,236)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,461,309)PPS Sieve Emerald: Earned 50,000,000 credits (83,501,701)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (352,129)TRP Sieve (suspended) Gold: Earned 500,000 credits (776,202)AP 26/27 Turquoise: Earned 5,000,000 credits (5,851,049)GFN Sapphire: Earned 20,000,000 credits (34,062,697)PSA Ruby: Earned 2,000,000 credits (4,154,617)
Message 137071 - Posted: 1 Feb 2020 | 18:48:18 UTC - in response to Message 137068.

Tomorrow's date is 02022020! A palindrome! How often does a thing like this happen?

And it is groundhog day!
Best to fill the day with good things on the off-chance you get stuck there.

It's also a Superb Owl Sunday!

(Did I spell that right? ;))

Dr Who Fan
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Joined: 26 Sep 06
Posts: 113
ID: 3556
Credit: 15,225,756
RAC: 55
321 LLR Silver: Earned 100,000 credits (101,760)Cullen LLR Silver: Earned 100,000 credits (161,492)ESP LLR Silver: Earned 100,000 credits (102,526)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (115,730)PPS LLR Gold: Earned 500,000 credits (896,177)PSP LLR Silver: Earned 100,000 credits (132,546)SoB LLR Silver: Earned 100,000 credits (433,700)SR5 LLR Silver: Earned 100,000 credits (114,016)SGS LLR Silver: Earned 100,000 credits (162,863)TRP LLR Silver: Earned 100,000 credits (100,020)Woodall LLR Silver: Earned 100,000 credits (103,446)321 Sieve Ruby: Earned 2,000,000 credits (2,006,012)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,740,001)PPS Sieve Turquoise: Earned 5,000,000 credits (5,066,749)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (119,708)TRP Sieve (suspended) Gold: Earned 500,000 credits (527,925)AP 26/27 Gold: Earned 500,000 credits (824,854)GFN Amethyst: Earned 1,000,000 credits (1,453,839)
Message 137073 - Posted: 1 Feb 2020 | 19:10:08 UTC

Maybe we can find a record number of and / or odd chance of world's largest prime tomorrow?
____________

Profile DaveProject donor
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Joined: 13 Feb 12
Posts: 2829
ID: 130544
Credit: 954,747,840
RAC: 5,071
Found 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (6,042,688)Cullen LLR Turquoise: Earned 5,000,000 credits (5,617,541)ESP LLR Turquoise: Earned 5,000,000 credits (5,303,526)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,202,873)PPS LLR Turquoise: Earned 5,000,000 credits (6,100,156)PSP LLR Turquoise: Earned 5,000,000 credits (5,513,728)SoB LLR Turquoise: Earned 5,000,000 credits (8,851,996)SR5 LLR Turquoise: Earned 5,000,000 credits (5,199,189)SGS LLR Turquoise: Earned 5,000,000 credits (5,100,018)TRP LLR Turquoise: Earned 5,000,000 credits (5,405,027)Woodall LLR Turquoise: Earned 5,000,000 credits (5,491,055)321 Sieve Jade: Earned 10,000,000 credits (10,003,334)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,502)PPS Sieve Double Silver: Earned 200,000,000 credits (306,761,000)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Double Silver: Earned 200,000,000 credits (200,128,500)GFN Double Bronze: Earned 100,000,000 credits (138,157,354)PSA Double Silver: Earned 200,000,000 credits (200,000,001)
Message 137074 - Posted: 1 Feb 2020 | 19:52:17 UTC
Last modified: 1 Feb 2020 | 19:58:23 UTC

LMAO at Superb Owl - that's what I call it too!

Yes I personally use ISO8601 YYYYMMDD so it is 20200202. The last was 20111102, the next 20211202. However these comprise 3 different numbers. 20200202 is just 2 different numbers. The last date to feature just 2 different numbers.........was 12211221. The next.........is 21111112.

So yes, super rare.

Profile Pooh Bear 27Project donor
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Joined: 10 May 09
Posts: 709
ID: 39821
Credit: 407,730,319
RAC: 173
Discovered 1 mega primeEliminated 1 conjecture "k"Discovered 1 twin prime321 LLR Turquoise: Earned 5,000,000 credits (5,014,405)Cullen LLR Turquoise: Earned 5,000,000 credits (5,734,854)ESP LLR Turquoise: Earned 5,000,000 credits (5,421,149)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,576,209)PPS LLR Jade: Earned 10,000,000 credits (17,389,837)PSP LLR Jade: Earned 10,000,000 credits (10,425,342)SoB LLR Turquoise: Earned 5,000,000 credits (8,986,628)SR5 LLR Turquoise: Earned 5,000,000 credits (5,248,659)SGS LLR Turquoise: Earned 5,000,000 credits (6,878,856)TRP LLR Turquoise: Earned 5,000,000 credits (5,416,106)Woodall LLR Turquoise: Earned 5,000,000 credits (6,400,237)321 Sieve Amethyst: Earned 1,000,000 credits (1,000,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,000,977)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,843,367)PPS Sieve Emerald: Earned 50,000,000 credits (78,673,438)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,473,750)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,243,608)AP 26/27 Jade: Earned 10,000,000 credits (12,531,383)GFN Double Silver: Earned 200,000,000 credits (202,192,765)PSA Turquoise: Earned 5,000,000 credits (5,042,125)
Message 137119 - Posted: 3 Feb 2020 | 0:33:12 UTC

The date 02/02/2020 was World Palindrome Day. Some parts of the world use Month first, some use Day first, but in over 900 years we have not had a World Palindrome Day. The last one was 11/11/1111.
So as a person who is alive today, you have seen a new Century, Millennium, and a Universal Palindrome date.
____________
My lucky numbers are 121*2^4553899-1 and 3756801695685*2^666669±1

Profile dannyridel
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Joined: 3 Feb 19
Posts: 791
ID: 1097922
Credit: 3,783,734
RAC: 799
321 LLR Silver: Earned 100,000 credits (100,228)Cullen LLR Bronze: Earned 10,000 credits (36,962)ESP LLR Bronze: Earned 10,000 credits (36,309)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (22,645)PPS LLR Silver: Earned 100,000 credits (219,290)PSP LLR Silver: Earned 100,000 credits (100,559)SoB LLR Silver: Earned 100,000 credits (138,888)SR5 LLR Bronze: Earned 10,000 credits (64,280)SGS LLR Bronze: Earned 10,000 credits (35,164)TRP LLR Bronze: Earned 10,000 credits (67,784)Woodall LLR Bronze: Earned 10,000 credits (40,976)321 Sieve Gold: Earned 500,000 credits (506,814)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Gold: Earned 500,000 credits (825,895)AP 26/27 Silver: Earned 100,000 credits (141,505)GFN Gold: Earned 500,000 credits (859,368)PSA Silver: Earned 100,000 credits (373,034)
Message 137123 - Posted: 3 Feb 2020 | 3:08:53 UTC - in response to Message 137119.
Last modified: 3 Feb 2020 | 3:09:39 UTC

So as a person who is alive today, you have seen a new Century, Millennium, and a Universal Palindrome date.


I meet only one of the above requirements...

To add one, I have lived through my first PG anniversary!
____________
SHSID Electronics Group
SHSIDElectronicsGroup@outlook.com

GFN-14: 50103906^16384+1
Proth "SoB": 44243*2^440969+1


Profile denim
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Joined: 22 Sep 08
Posts: 59
ID: 29415
Credit: 524,789,992
RAC: 109
321 LLR Gold: Earned 500,000 credits (514,706)Cullen LLR Gold: Earned 500,000 credits (538,608)ESP LLR Gold: Earned 500,000 credits (609,066)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (563,611)PPS LLR Gold: Earned 500,000 credits (521,882)PSP LLR Gold: Earned 500,000 credits (753,415)SoB LLR Gold: Earned 500,000 credits (800,120)SR5 LLR Gold: Earned 500,000 credits (546,582)SGS LLR Silver: Earned 100,000 credits (169,781)TRP LLR Gold: Earned 500,000 credits (830,876)Woodall LLR Gold: Earned 500,000 credits (517,917)321 Sieve Amethyst: Earned 1,000,000 credits (1,048,172)Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (16,829,465)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (54,590)PPS Sieve Double Silver: Earned 200,000,000 credits (358,358,299)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (115,628)TRP Sieve (suspended) Silver: Earned 100,000 credits (329,325)AP 26/27 Emerald: Earned 50,000,000 credits (68,895,516)GFN Emerald: Earned 50,000,000 credits (72,716,331)
Message 138269 - Posted: 24 Feb 2020 | 17:08:25 UTC

Very cool.
____________

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Message boards : General discussion : Happy Palindrome Day!

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