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:










MnStatusDetails
Fermat F16Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
825753601929.61953-08-14
1889817579750213184200376332787.31996-12
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000021176 / 105362
Estimated T-Level: 56.0
TF below 2^181 is very unlikely to find new factors due to ECM effort.
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-12-18Ryan Lee Rothfactor ECM small0.00 % 2024-12-18
2024-11-26Ryan Lee Rothfactor ECM smallC5S114.21 % 2024-12-18
2023-09-09sannerud.comfactor ECM smallC3S234.76 % 2024-12-18
History
DateUserTypeResult
2021-05-02ATHNF-PP1
Start=6/5, B1=2000000000, B2=100000000000
2021-04-23ATHNF-PP1
Start=2/7, B1=500000000, B2=50000000000
2014-04-27chargerF-ECM
Factor: 825753601
2014-04-03chargerF-ECM
Factor: 825753601