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

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Exponent Range:










MnStatusDetails
710971Factored
FactorDigitsBitsDate
100205040636445169580355153272993.02021-05-01 20:44:55
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski29070
Verified (Factored)Brian J. Beesley402978341E0F29070
Verified (Factored)Michael J. Kilfoyle402978341E0F29070
Verified (Factored)2015-04-11MadPoo402978341E0F290790333
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-05-02xyuzyz3228A19C12F39077119701353
Verified2021-05-03marssystems3228A19C12F39077160209453
History
DateUserTypeResult
2021-05-03curtiscCERT
PRP Certification
Proof certified good
2021-05-03marssystemsC-PRP
M710971/10020504063644516958035515327 : 3228A19C12F39077
PRP proof power = 6
PRP: Verified
Proof certified good
2021-05-02xyuzyzC-PRP
M710971/10020504063644516958035515327 : 3228A19C12F39077
PRP: Verified
PRP without proof (small exponent)
2021-05-01GANF-ECM
Factor: 10020504063644516958035515327 / (ECM curve 7, B1=250000, B2=25000000, Sigma=7712092419603382)
2020-05-08Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-04Smok_bmv NF
no factor from 2^65 to 2^66
2017-01-18ConductorNF
no factor from 2^64 to 2^65
2016-05-18mikrNF-PM1
B1=21000000, B2=900000000, E=12
2015-10-13Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-13Gordon SpenceNF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
402978341E0F2907
2015-02-27NRNF
no factor from 2^61 to 2^62
2010-06-29Architects CubedNF
no factor from 2^60 to 2^61
2008-11-17Jayson KingNF-PM1
B1=5000000, B2=160000000, E=12
2008-10-12Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-12Sturle SundeNF
no factor from 2^58 to 2^59