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

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Exponent Range:










MnStatusDetails
306407Factored
FactorDigitsBitsDate
14957586693501183934379613104269529461755915145146.72022-09-22 23:05:51
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000161 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski3C790
Verified (Factored)Unknown3C790
Verified (Factored)Klaus KastensADD03DDA2700BC790
Verified (Factored)Eivind TrielADD03DDA2700BC7995988
Verified (Factored)2001-12-08Dennis PopeADD03DDA2700BC7914797
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-09-23Oliver Kruse333D6FEF3CF7412A16246453
P-1 factors
DateFactorB1B2
2022-09-22149575866935011839343796131042695294617559151100000000034558792137870
History
DateUserTypeResult
2022-09-23Massimo Cappelli (ik5pwa)CERT
PRP Certification
Proof certified good
2022-09-23Oliver KruseC-PRP
M306407/149575866935011839343796131042695294617559151 : 333D6FEF3CF7412A
PRP proof power = 5
PRP: Verified
Proof certified good
2022-09-22Oliver KruseF-PM1
Factor: 149575866935011839343796131042695294617559151 / (P-1, B1=1000000000, B2=34558792137870)
2022-06-09Gordon SpenceNF
no factor from 2^67 to 2^68
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-01-14YxinityNF
no factor from 2^66 to 2^67
2019-11-22Gordon SpenceNF
no factor from 2^65 to 2^66
2018-01-18Gordon SpenceNF
no factor from 2^64 to 2^65
2015-12-26Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-26Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-19NRNF
no factor from 2^61 to 2^62
2012-10-18alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2012-08-18alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2012-04-24David CampeauNF
no factor from 2^60 to 2^61
2009-01-27Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59
2008-11-15GrunwalderGIMPNF-PM1
B1=2000000, B2=200000000, E=12