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

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Exponent Range:





MnDetails
2499671
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
1440233107576996491857.0old
1066137417134213782999672476.52025-08-10 09:06:44
51143457621916874960236092582.12024-02-02 08:14:19
ECM
DigitsB1Curves
2550000113 / 280
Estimated T-Level: 22.0 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2017-10-14Oliver Kruse89DFDE6B3A035790160352153
Factored
PRP without proof (not generated)
2017-11-30storm551089DFDE6B3A0357901225288853
Factored
Certified Good
2024-02-02seatsea89DFDE6B3A0357902206402953
Verified
Certified Good
2025-08-10feather89DFDE6B3A0357903175166853
History
DateUserTypeResult
2025-08-10Andy PrimeCERT
Proof certified good
2025-08-10featherC-PRPM2499671/144023310757699649/5114345762191687496023609/106613741713421378299967 : 89DFDE6B3A035790
Proof Certified Good

Proof Power: 7

2025-08-10featherF-ECMFactor: 106613741713421378299967 / ECM curve 32, B1=69836, B2=17322525, Edwards Sigma=3234003059485284
2024-02-02FlyingEagleCERT
Proof certified good
2024-02-02seatseaC-PRPM2499671/144023310757699649/5114345762191687496023609 : 89DFDE6B3A035790
Proof Certified Good

Proof Power: 7

2024-02-02seatseaF-ECMFactor: 5114345762191687496023609 / ECM curve 35, B1=50000, B2=31130190, Edwards Sigma=4893959799443304
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-30storm5510C-PRPM2499671/144023310757699649 : 89DFDE6B3A035790
2017-10-14Oliver KruseC-PRPM2499671/144023310757699649 : 89DFDE6B3A035790