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

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Exponent Range:










MnStatusDetails
13581397Factored
FactorDigitsBitsDate
410661203748671627911036492685.12022-07-06 03:34:49
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)2002-04-07Bradley A. EllisonB931B0DDCFFF969312842205
Verified (Factored)2005-02-02Scott D. BardwickB931B0DDCFFF96934131438
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-08-24Ryan PropperA1A6A7D52DABF9941997202253
P-1 factors
DateFactorB1B2
2022-07-0641066120374867162791103649740000369966870
History
DateUserTypeResult
2022-08-24Naegi MakotoCERT
PRP Certification
Proof certified good
2022-08-24Ryan PropperC-PRP
M13581397/41066120374867162791103649 : A1A6A7D52DABF994
PRP proof power = 8
PRP: Verified
Proof certified good
2022-07-06James HeinrichF-PM1
Factor: 41066120374867162791103649 / (P-1, B1=740000, B2=369966870)
2021-12-13-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-24-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-04SRBaseNF
no factor from 2^70 to 2^71
2021-08-09SRBaseNF
no factor from 2^69 to 2^70
2018-01-24ramgeisNF
no factor from 2^68 to 2^69
2017-12-23-Anonymous-NF
no factor from 2^67 to 2^68
2015-08-07NesowaNF
no factor from 2^66 to 2^67
2014-06-23NesowaNF
no factor from 2^65 to 2^66