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
4890139Factored
FactorDigitsBitsDate
147123959275247493345372373.62023-01-01 13:22:08
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-05-08Adam Paster531026AB11510B9E0
Verified (Factored)2000-04-12Thomas L. Bevan531026AB11510B9E1765111
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-07g0b6393205A9728E9561326451353
P-1 factors
DateFactorB1B2
2023-01-011471239592752474933453741000004100000
History
DateUserTypeResult
2023-01-07Hestia.oxwil.comCERT
PRP Certification
Proof certified good
2023-01-07g0bC-PRP
M4890139/14712395927524749334537 : 6393205A9728E956
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-01Sid & AndyF-PM1
Factor: 14712395927524749334537 / (P-1, B1=4100000)
2020-12-03-Anonymous-NF
no factor from 2^70 to 2^71
2018-06-09YxinityNF
no factor from 2^69 to 2^70
2018-06-09YxinityNF
no factor from 2^68 to 2^69
2018-05-08ramgeisNF
no factor from 2^67 to 2^68
2017-10-31YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-22snme2pm1NF
no factor from 2^65 to 2^66
2015-01-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-07VictordeHollanderNF
no factor from 2^63 to 2^64
2014-01-12David CampeauNF-PM1
B1=410000, B2=11070000, E=12
2011-10-09GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-16garoNF
no factor from 2^61 to 2^62
2009-08-25Carsten KossendeyNF-PM1
B1=30000, B2=435000