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

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Exponent Range:










MnStatusDetails
15804461Factored
FactorDigitsBitsDate
1547683280428601955772167.12017-01-04 21:22:44
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-10-26Martin HawlischF9D1C52837AC5BEF13263244
Verified (Factored)2006-03-01Chris MarbleF9D1C52837AC5BEF13022438
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-10-27techn1ciaN6FA52383F2BCCFF91926023853
History
DateUserTypeResult
2023-10-27curtiscCERT
PRP Certification
Proof certified good
2023-10-27techn1ciaNC-PRP
M15804461/154768328042860195577 : 6FA52383F2BCCFF9
PRP proof power = 8
PRP: Verified
Proof certified good
2023-09-09nordiNF-PM1
B1=480000, B2=264402600
2023-08-11nordiNF-PM1
B1=480000
2017-01-04ATHF-ECM
Factor: 154768328042860195577 / (ECM curve 1, B1=50000, B2=5000000)
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-07-20NesowaNF
no factor from 2^66 to 2^67