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

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MnStatusDetails
2493587Factored
FactorDigitsBitsDate
3149630045826049373532168.12020-10-27 04:09:34
ECM
DigitsB1Curves
255000077 / 280
Estimated T-Level: 21.4 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Brian Reilly792933B23D200CC20
Verified (Factored)1999-11-10Ryan Smith792933B23D200CC2819637
Verified (Factored)2018-06-01kkmrkkblmbrbk792933B23D200CC22384256
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-10-27mrh65F19120B90151D4197592853
History
DateUserTypeResult
2020-10-27curtiscCERT
PRP Certification
Proof certified good
2020-10-27mrhC-PRP
M2493587/314963004582604937353 : 65F19120B90151D4
PRP proof power = 7
PRP: Verified
Proof certified good
2020-10-27mnd9F-ECM
Factor: 314963004582604937353 / (ECM curve 4, B1=50000, B2=5000000, Sigma=1464044508566319)
2019-04-15TJAOINF
no factor from 2^67 to 2^68
2018-06-01kkmrkkblmbrbkC-LL
792933B23D200CC2
2017-07-24Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-12-24mikrNF-PM1
B1=3000000, B2=100000000, E=12
2015-10-31ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-12-03mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-10JossNF-PM1
B1=120740
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-11Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-24Oscar ÖstlinNF-PM1
B1=95000, B2=1971250, E=6
2010-12-22JossNF-PM1
B1=20000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61