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

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MnStatusDetails
3502427Factored
FactorDigitsBitsDate
1597271276690296603204572477.12021-06-16 05:06:45
ECM
DigitsB1Curves
255000029 / 280
Estimated T-Level: 20.5
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Tim Goodwin96BC5150966E24C90
Verified (Factored)1999-07-26Charles Dorian96BC5150966E24C936915
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-06-16tottenhoff8526E60BA219BFC51330129453
History
DateUserTypeResult
2022-09-09JossNF-PM1
B1=1000000, B2=236058900
2022-04-12JossNF-PM1
B1=1000000, B2=146130600
2021-06-16Ben DeloCERT
PRP Certification
Proof certified good
2021-06-16tottenhoffC-PRP
M3502427/159727127669029660320457 : 8526E60BA219BFC5
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-16daveward2005F-ECM
Factor: 159727127669029660320457 / (ECM curve 7, B1=50000, B2=5000000, Sigma=8269332096054987)
2021-03-19-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-17-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-17-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-14axnNF
no factor from 2^68 to 2^69
2018-12-17TJAOINF
no factor from 2^67 to 2^68
2017-01-07Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-04omylistNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-01-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-25VictordeHollanderNF
no factor from 2^63 to 2^64
2012-06-20GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-11-04markrNF-PM1
B1=235000, B2=5875000, E=12
2011-07-20Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-03Carsten KossendeyNF-PM1
B1=20000, B2=240000
2009-02-21Jayson KingNF
no factor from 2^60 to 2^61