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

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Exponent Range:










MnStatusDetails
3580669Factored
FactorDigitsBitsDate
321670695852152542524412374.82021-06-29 16:54:33
ECM
DigitsB1Curves
255000021 / 280
Estimated T-Level: 20.4
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-05-01INTERSHOP Communications9EEF96A4110E9B480
Verified (Factored)1999-08-16Charles Kalfian9EEF96A4110E9B483118156
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-06-30kutens381282FB32045A4F1340987653
History
DateUserTypeResult
2022-08-13JossNF-PM1
B1=3580669, B2=3598822500
2022-05-25JossNF-PM1
B1=100000, B2=130364850
2022-03-01JossNF-PM1
B1=100000
2021-06-30skyivbenCERT
PRP Certification
Proof certified good
2021-06-30kutensC-PRP
M3580669/32167069585215254252441 : 381282FB32045A4F
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-29kutensF-ECM
Factor: 32167069585215254252441 / (ECM curve 2, B1=50000, B2=6750000, Sigma=3669549781865729)
2021-03-20-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-18-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-18-Anonymous-NF
no factor from 2^69 to 2^70
2020-12-19axnNF
no factor from 2^68 to 2^69
2018-10-15TJAOINF
no factor from 2^67 to 2^68
2017-01-20Gordon SpenceNF
no factor from 2^66 to 2^67
2016-05-07Squeeky_SquirrelNF-PM1
B1=225000, B2=6581250, E=12
2016-02-25ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-01-30VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-30VictordeHollanderNF
no factor from 2^63 to 2^64
2012-07-02GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-12-26Squeeky_SquirrelNF-PM1
B1=85000, B2=1593750, E=6
2011-06-26Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-09Carsten KossendeyNF-PM1
B1=20000, B2=245000
2009-03-15S485122NF
no factor from 2^60 to 2^61