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

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Exponent Range:










MnStatusDetails
927631Factored
FactorDigitsBitsDate
24777231677515653712344793235065083948637742137.52022-08-07 14:30:02
ECM
DigitsB1Curves
2550000280 / 280
30250000103 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
BadAlex and Nick Myrman766C0
Verified (Factored)Jim Kraemer59ADAD0294C9766D0
Verified (Factored)2002-01-08Marc Getty / Phil Fizur59ADAD0294C9766D176904
Verified (Factored)2015-04-11MadPoo59ADAD0294C9766D802032
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-08-07Naegi Makoto54336AB0E167AC8E177678753
P-1 factors
DateFactorB1B2
2022-08-07247772316775156537123447932350650839486377500000001263691439010
History
DateUserTypeResult
2022-08-07whateverxequalsCERT
PRP Certification
Proof certified good
2022-08-07Naegi MakotoC-PRP
M927631/247772316775156537123447932350650839486377 : 54336AB0E167AC8E
PRP proof power = 6
PRP: Verified
Proof certified good
2022-08-07axnF-PM1
Factor: 247772316775156537123447932350650839486377 / (P-1, B1=50000000, B2=1263691439010)
2017-12-05Smok_bmv NF
no factor from 2^67 to 2^68
2017-12-04Smok_bmv NF
no factor from 2^66 to 2^67
2017-12-04Smok_bmv NF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-12-31lycornNF
no factor from 2^64 to 2^65
2015-09-22Gordon SpenceNF
no factor from 2^63 to 2^64
2015-09-22Gordon SpenceNF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
59ADAD0294C9766D
2014-09-16lycornNF
no factor from 2^61 to 2^62
2013-12-30alpertronNF-PM1
B1=10000000, B2=500000000, E=12
2013-10-13David CampeauNF-PM1
B1=965000, B2=25090000, E=12
2011-10-22JossNF-PM1
B1=732421
2011-07-13JossNF-PM1
B1=219726
2011-06-02JossNF-PM1
B1=200000
2010-05-21Architects CubedNF
no factor from 2^60 to 2^61