Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
8435929Factored
FactorDigitsBitsDate
437536930213763195140732375.22021-12-09 13:57:48
ECM
DigitsB1Curves
25500003 / 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)1999-11-17michael salamon092B4437632496844485818
Verified (Factored)2002-12-31Shane Sanford092B4437632496848261758
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-12-17kutens306F2E732935EF551159805853
P-1 factors
DateFactorB1B2
2021-12-0943753693021376319514073102373430712007
History
DateUserTypeResult
2021-12-17Jeff VanderauCERT
PRP Certification
Proof certified good
2021-12-17kutensC-PRP
M8435929/43753693021376319514073 : 306F2E732935EF55
PRP proof power = 8
PRP: Verified
Proof certified good
2021-12-09GdSF-PM1
Factor: 43753693021376319514073 / (P-1, B1=1023734, B2=30712007, e=12, n=512K CUDAPm1 v0.22)
2021-12-05-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-05SRBaseNF
no factor from 2^71 to 2^72
2021-08-27SRBaseNF
no factor from 2^70 to 2^71
2021-08-20SRBaseNF
no factor from 2^69 to 2^70
2020-01-03TJAOINF
no factor from 2^68 to 2^69
2018-03-10monstNF
no factor from 2^67 to 2^68
2016-01-07snme2pm1NF
no factor from 2^66 to 2^67
2015-05-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-03-17lycornNF
no factor from 2^64 to 2^65
2012-08-19bcp19NF-PM1
B1=100000, B2=1825000, E=6