Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
15012967Factored
FactorDigitsBitsDate
236714781466383907172767902312994.32022-03-18 21:39:51
5983398329566113990662080229213098.92022-04-07 07:34:06
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-09-29Lyle BergmanED7B7F99C506F7965377236
Bad2005-09-03Ezequiel FloresFD1BE6DB4530A2D75820779
Verified (Factored)2006-06-13shigehiro sasakiED7B7F99C506F7966990895
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-11-16Naegi Makoto2591BAE41878BD132676567653
P-1 factors
DateFactorB1B2
2022-03-182367147814663839071727679023115000004845580740
History
DateUserTypeResult
2022-11-16curtiscCERT
PRP Certification
Proof certified good
2022-11-16Naegi MakotoC-PRP
M15012967/23671478146638390717276790231/598339832956611399066208022921 : 2591BAE41878BD13
PRP proof power = 8
PRP: Verified
Proof certified good
2022-04-07ATHF-PP1
Start=2/7, B1=1000000, B2=31000000, Factor: 598339832956611399066208022921
2022-03-18LuminescenceF-PM1
Factor: 23671478146638390717276790231 / (P-1, B1=1500000, B2=4845580740)
2021-10-10-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2020-06-13ThaNF-PM1
B1=500000, B2=20000000, E=12
2020-06-05YxinityNF
no factor from 2^69 to 2^70
2017-09-30ramgeisNF
no factor from 2^68 to 2^69
2015-10-26mikrNF
no factor from 2^67 to 2^68
2014-06-11NesowaNF
no factor from 2^66 to 2^67
2014-06-11NesowaNF
no factor from 2^65 to 2^66