Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
100511Factored
FactorDigitsBitsDate
15277673823.9old
516224497928.92008-07-26 09:16:54
61664490030562637975592272.42010-02-20 21:03:16
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000274 / 1566
Estimated T-Level: 30.9 ⓘ
TF below 2^98 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse98E076ADA5D311EC3013
Verified2017-10-09Chang Chia-Tche98E076ADA5D311EC3013
Verified2017-10-13kkmrkkblmbrbk98E076ADA5D311EC31552913
Verified2020-04-17Oliver Kruse6F88CED3C3414CBB31647453
Verified2022-04-15LordJulius6F88CED3C3414CBB31018853
History
DateUserTypeResult
2022-10-22LordJuliusNF
no factor from 2^66 to 2^67
2022-10-22LordJuliusNF
no factor from 2^65 to 2^66
2022-10-22LordJuliusNF
no factor from 2^64 to 2^65
2022-10-22LordJuliusNF
no factor from 2^63 to 2^64
2022-10-22LordJuliusNF
no factor from 2^62 to 2^63
2022-04-15LordJuliusC-PRP
M100511/15277673/516224497/6166449003056263797559 : 6F88CED3C3414CBB
PRP: Verified
PRP without proof (small exponent)
2022-04-13LordJuliusNF
no factor from 2^61 to 2^62
2022-04-13LordJuliusNF
no factor from 2^60 to 2^61
2022-04-13LordJuliusNF
no factor from 2^59 to 2^60
2022-04-13LordJuliusNF
no factor from 2^58 to 2^59
2022-04-13LordJuliusNF
no factor from 2^57 to 2^58
2021-12-17Seth_TrNF-PM1
B1=1000000000, B2=25609020757320
2020-04-17Oliver KruseC-PRP
M100511/15277673/516224497/6166449003056263797559 : 6F88CED3C3414CBB
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M100511/15277673/516224497/6166449003056263797559 : 98E076ADA5D311EC
PRP: Verified
PRP without proof (not generated)
2017-10-09Chang Chia-TcheC-PRP
M100511/known_factors : 98E076ADA5D311EC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M100511/known_factors : 98E076ADA5D311EC
PRP without proof (not generated)
2016-10-31kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2010-02-20Rob_DeeF-ECM
Factor: 6166449003056263797559
2008-07-26J FeitsmaF
Factor: 516224497