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

PrimeNet Exponent Status

Exponent Range:





MnDetails
109481
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
2805369447577714631858.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000716 / 1566
Estimated T-Level: 32.3 ⓘ
TF below 2^102 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse4A81BE6F16670E361013
Verified
No proof (small exponent)
2017-10-13kkmrkkblmbrbk4A81BE6F16670E36110598613
Verified
No proof (small exponent)
2020-04-17Oliver KruseCB50E0DE3218EDA319606753
Verified
Not Uploaded
2022-04-15LordJuliusCB50E0DE3218EDA319204653
Verified
Certified Good
2022-11-11LordJuliusCB50E0DE3218EDA312282753
History
DateUserTypeResult
2026-02-10Jason LynchNF-PM1B1=893574000, B2=137281887853110
2025-12-17ViliamFNF-PM1B1=100000000, B2=2943700209450
2022-11-11ClogheenCERT
Proof certified good
2022-11-11LordJuliusC-PRPM109481/280536944757771463 : CB50E0DE3218EDA3
Proof Not Uploaded

Proof Power: 5

2022-05-07LordJuliusNFno factor TF: 62-63
2022-05-07LordJuliusNFno factor TF: 60-61
2022-05-07LordJuliusNFno factor TF: 61-62
2022-05-07LordJuliusNFno factor TF: 59-60
2022-05-07LordJuliusNFno factor TF: 58-59
2022-05-07LordJuliusNFno factor TF: 1-57
2022-04-15LordJuliusC-PRPM109481/280536944757771463 : CB50E0DE3218EDA3
Proof Not Uploaded

Proof Power: 5

2020-04-17Oliver KruseC-PRPM109481/280536944757771463 : CB50E0DE3218EDA3
2018-10-26J.R. AllenNFno factor TF: 1-57
2017-10-13kkmrkkblmbrbkC-PRPM109481/280536944757771463 : 4A81BE6F16670E36
2017-09-21Oliver KruseC-PRPM109481/280536944757771463 : 4A81BE6F16670E36
2017-09-21Oliver KruseC-PRPM109481/280536944757771463 : 4A81BE6F16670E36
2016-12-10kkmrkkblmbrbkNF-PM1B1=100000000, B2=2000000000, E=12