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

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MnStatusDetails
7290883Factored
FactorDigitsBitsDate
9648321169518575406412169.72020-12-04 04:29:55
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-12-01hb01501AB5CC83E2091814347
Verified (Factored)2002-09-14Ars Technica Team Prime Rib01501AB5CC83E2094413078
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-12-04mrh515BA4E076C16CCC1481583253
History
DateUserTypeResult
2020-12-04Ben DeloCERT
PRP Certification
Proof certified good
2020-12-04mrhC-PRP
M7290883/964832116951857540641 : 515BA4E076C16CCC
PRP proof power = 8
PRP: Verified
Proof certified good
2020-12-04Smok_bmv F
Factor: 964832116951857540641 / TF: 69-70*
2020-03-09GdSNF-PM1
B1=777023, B2=15540452, E=12
2020-03-06TJAOINF
no factor from 2^68 to 2^69
2020-03-01GdSNF-PM1
B1=310809, B2=6216181, E=12
2018-08-05ramgeisNF
no factor from 2^67 to 2^68
2016-10-19Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-16VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-19David CampeauNF
no factor from 2^64 to 2^65
2013-11-03NesowaNF
no factor from 2^63 to 2^64
2012-08-30Squeeky_SquirrelNF-PM1
B1=90000, B2=1620000, E=6