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Message boards : Project Staging Area : 121 and 27 primes

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Profile Roger
Volunteer developer
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Joined: 27 Nov 11
Posts: 1138
ID: 120786
Credit: 268,668,824
RAC: 0
Found 1 prime in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,037,982)Cullen LLR Ruby: Earned 2,000,000 credits (2,015,907)ESP LLR Ruby: Earned 2,000,000 credits (2,232,391)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,088,705)PPS LLR Ruby: Earned 2,000,000 credits (3,220,665)PSP LLR Ruby: Earned 2,000,000 credits (2,539,644)SoB LLR Ruby: Earned 2,000,000 credits (2,122,524)SR5 LLR Ruby: Earned 2,000,000 credits (2,238,295)SGS LLR Turquoise: Earned 5,000,000 credits (5,024,064)TRP LLR Ruby: Earned 2,000,000 credits (2,125,391)Woodall LLR Ruby: Earned 2,000,000 credits (2,037,732)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,190,731)Cullen/Woodall Sieve Silver: Earned 100,000 credits (207,387)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,049,697)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,422,123)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (3,227,972)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,021,659)AP 26/27 Sapphire: Earned 20,000,000 credits (20,651,644)GFN Emerald: Earned 50,000,000 credits (57,918,585)PSA Sapphire: Earned 20,000,000 credits (43,298,465)
Message 62798 - Posted: 20 Feb 2013 | 14:15:53 UTC

Can anyone help me out?
On the front page of Primegrid it lists under "Other significant primes":
121·2^4553899+1
27·2^3855094+1
Should these be -1 forms as stated above it in the "Recent Significant Primes"?

That being the case what are the latest finds for 121·2^n+1 and 27·2^n+1 ?
I can see 121·2^674360+1 and 27·2^2218064+1 at http://www.rieselprime.de/
However with 121·2^n+1 searched up to 4,999,992 there is a 99.97% chance a bigger prime should have been found.
____________

ID: 62798 | Report as offensive
Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 14045
ID: 53948
Credit: 482,681,090
RAC: 578,366
The "Shut up already!" badge: This loud mouth has mansplained on the forums over 10 thousand times! Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 2 mega primesFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de PrimesFound 2 primes in the 2022 Tour de PrimesFound 1 mega prime in the 2022 Tour de PrimesFound 1 prime in the 2022 Tour de Primes Mountain StageFound 1 prime in the 2023 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (6,949,793)Cullen LLR Turquoise: Earned 5,000,000 credits (5,513,946)ESP LLR Turquoise: Earned 5,000,000 credits (7,150,009)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,094,541)PPS LLR Sapphire: Earned 20,000,000 credits (24,049,916)PSP LLR Jade: Earned 10,000,000 credits (11,203,327)SoB LLR Sapphire: Earned 20,000,000 credits (36,821,441)SR5 LLR Sapphire: Earned 20,000,000 credits (22,821,256)SGS LLR Turquoise: Earned 5,000,000 credits (6,633,853)TRP LLR Turquoise: Earned 5,000,000 credits (6,308,522)Woodall LLR Turquoise: Earned 5,000,000 credits (6,390,624)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (51,764,198)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,888,492)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Sapphire: Earned 20,000,000 credits (28,526,082)GFN Double Bronze: Earned 100,000,000 credits (120,616,519)WW (retired) Emerald: Earned 50,000,000 credits (88,580,000)PSA Jade: Earned 10,000,000 credits (13,196,884)
Message 62800 - Posted: 20 Feb 2013 | 14:47:50 UTC - in response to Message 62798.

Can anyone help me out?
On the front page of Primegrid it lists under "Other significant primes":
121·2^4553899+1
27·2^3855094+1
Should these be -1 forms as stated above it in the "Recent Significant Primes"?


Fixed, thank you.

That being the case what are the latest finds for 121·2^n+1 and 27·2^n+1 ?
I can see 121·2^674360+1 and 27·2^2218064+1 at http://www.rieselprime.de/
However with 121·2^n+1 searched up to 4,999,992 there is a 99.97% chance a bigger prime should have been found.


Those are the only 27 and 121 primes found at primegrid.

____________
My lucky number is 75898524288+1

ID: 62800 | Report as offensive

Message boards : Project Staging Area : 121 and 27 primes

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