Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
1540151
Composite, with 5 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 261
Factored
FactorDigitsBitsDate
3080303721.6old
295708993928.12008-07-15 10:04:24
400126805993479691755.22015-01-09 15:18:34
58779311585175136731962.42016-07-28 09:27:46
2756272784455232129032167.92017-12-01 10:06:33
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.
PRP
StatusProofDateUserResidueShiftTypeBase
Factored
Certified Good
Power=6
2025-09-02KrieselB60B0C7DCE66AD95013
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2017-10-05Oliver KruseF0466B6EA56A0AC14013
Factored
PRP without proof (not generated)
2017-11-10kkmrkkblmbrbkF0466B6EA56A0AC1465086713
Verified
PRP without proof (not generated)
2017-12-02Oliver KruseB60B0C7DCE66AD95599376953
Verified
PRP without proof (not generated)
2017-12-02storm5510B60B0C7DCE66AD95528000853
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
Proof certified good
2025-09-02KrieselC-PRPB60B0C7DCE66AD95
Proof Certified Good

Proof Power: 6

2025-07-29Anton TsvetkovNF-PM1B1=5000000, B2=5011993350
2022-03-08LordJuliusNFno factor TF: 61-62
2022-03-08LordJuliusNFno factor TF: 56-61
2017-12-02storm5510C-PRPM1540151/3080303/295708993/40012680599347969/5877931158517513673/275627278445523212903 : B60B0C7DCE66AD95
2017-12-02Oliver KruseC-PRPM1540151/3080303/295708993/40012680599347969/5877931158517513673/275627278445523212903 : B60B0C7DCE66AD95
2017-12-01Oliver KruseF-ECMFactor: 275627278445523212903
2017-11-10kkmrkkblmbrbkC-PRPM1540151/3080303/295708993/40012680599347969/5877931158517513673 : F0466B6EA56A0AC1
2017-10-05Oliver KruseC-PRPM1540151/3080303/295708993/40012680599347969/5877931158517513673 : F0466B6EA56A0AC1
2017-10-01Oliver KruseC-PRPM1540151/3080303/295708993/40012680599347969/5877931158517513673 : F0466B6EA56A0AC1
2016-07-28TJAOIFFactor: 5877931158517513673
2016-03-17alpertronNF-PM1B1=500000, B2=15000000, E=12
2015-01-09TJAOIFFactor: 40012680599347969
2008-07-15J FeitsmaFFactor: 295708993