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:





MnDetails
2383817
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
14302903823.8old
377804433966071445.12014-01-15 10:39:44
5405250941077310395798492478.82025-03-24 08:38:20
71768620628839215147035292582.62018-05-13 20:15:11
P-1 factors
DateFactorsB1B2
2018-05-137176862062883921514703529
200000060000000
ECM
DigitsB1Curves
2550000192 / 280
Estimated T-Level: 23.4 ⓘ
TF below 2^73 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2017-10-12Oliver Kruse21B975CA4B5D7D1E2215885353
Factored
PRP without proof (not generated)
2017-11-25kkmrkkblmbrbk21B975CA4B5D7D1E2233780653
Factored
PRP without proof (not generated)
2018-05-14Klaus Nordmann21B975CA4B5D7D1E359052453
Verified
Certified Good
2025-03-24Daniil Tsarkov21B975CA4B5D7D1E4186317553
History
DateUserTypeResult
2025-03-24George WoltmanCERT
Proof certified good
2025-03-24Daniil TsarkovC-PRPM2383817/14302903/37780443396607/7176862062883921514703529/540525094107731039579849 : 21B975CA4B5D7D1E
Proof Certified Good

Proof Power: 7

2025-03-24Daniil TsarkovF-ECMFactor: 540525094107731039579849 / ECM curve 6, B1=74318, B2=117709515, Edwards Sigma=935661280279367
2018-05-14Klaus NordmannC-PRPM2383817/14302903/37780443396607/7176862062883921514703529 : 21B975CA4B5D7D1E
2018-05-13alpertronF-PM1Factor: 7176862062883921514703529 / B1=2000000, B2=60000000
2017-11-25kkmrkkblmbrbkC-PRPM2383817/14302903/37780443396607 : 21B975CA4B5D7D1E
2017-10-12Oliver KruseC-PRPM2383817/14302903/37780443396607 : 21B975CA4B5D7D1E
2014-01-15TJAOIFFactor: 37780443396607