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
10651
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
73981847826.1old
9747973076292924231859.82008-08-29 02:24:26
P-1 factors
DateFactorsB1B2
2022-11-09No new factors discovered100000000000120443211520241616
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000003290 / 16550
Estimated T-Level: 46.0 ⓘ
TF below 2^148 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 Kruse47245CFE28AA91B62013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbk47245CFE28AA91B62807713
Verified
No proof (small exponent)
2020-04-17Oliver Kruse2E7485225EAAC2962430653
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk2E7485225EAAC2962373253
History
DateUserTypeResult
2025-02-25masserNF-PP1Start=140/29, B1=640000000, B2=639360000000
2025-02-16masserNF-PP1Start=6/5, B1=640000000, B2=639360000000
2025-01-27masserNF-PP1Start=2/7, B1=640000000, B2=639360000000
2024-07-01kkmrkkblmbrbkC-PRPM10651/73981847/974797307629292423 : 2E7485225EAAC296
2022-11-09Anton RepkoF-PM1Factor: 974797307629292423 / B1=100000000000, B2=120443211520241610
2021-08-02ViliamFNF-PM1B1=250000000, B2=40250000000
2020-04-17Oliver KruseC-PRPM10651/73981847/974797307629292423 : 2E7485225EAAC296
2017-10-12kkmrkkblmbrbkC-PRPM10651/73981847/974797307629292423 : 47245CFE28AA91B6
2017-09-21Oliver KruseC-PRPM10651/73981847/974797307629292423 : 47245CFE28AA91B6
2017-09-21Oliver KruseC-PRPM10651/73981847/974797307629292423 : 47245CFE28AA91B6
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2008-08-29-anonymous-F-ECMFactor: 974797307629292423