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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
100913Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^119 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000000
B2 = 879161696813400
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000002216 / 4588
Estimated T-Level: 37.4 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown14E90
VerifiedRobert Clark17BD08B254AF94E90
VerifiedBrian J. Beesley17BD08B254AF94E90
VerifiedEivind Triel17BD08B254AF94E938999
Verified2016-06-01MadPoo17BD08B254AF94E935243
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-05-06-Anonymous-factor ECM smallC1S20.00 % 2025-10-09
History
DateUserTypeResult
2023-08-31masserNF-PP1
Start=6/5, B1=60000000, B2=4740000000
2023-08-29masserNF-PP1
Start=154/37, B1=60000000, B2=4740000000
2022-11-29Oliver KruseNF-PM1
B1=10000000000, B2=879161696813400
2022-04-13Gordon SpenceNF
no factor from 2^67 to 2^68
2021-04-28Oliver KruseNF-PP1
Start=2/7, B1=50000000, B2=7050000000
2020-05-18GdSNF-PM1
B1=1642635517, B2=85417046906, E=12
2020-01-22Gordon SpenceNF
no factor from 2^66 to 2^67
2019-02-09BloodERazorNF
no factor from 2^65 to 2^66
2017-10-23BloodERazorNF
no factor from 2^64 to 2^65
2016-11-24mikrNF-PM1
B1=350000000, B2=25500000000, E=12
2016-06-01MadPooC-LL
17BD08B254AF94E9
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-02-17Gordon SpenceNF
no factor from 2^63 to 2^64
2016-02-04monstedNF
no factor from 2^62 to 2^63
2015-07-11NRNF
no factor from 2^61 to 2^62
2013-10-08lycornNF
no factor from 2^60 to 2^61
2012-11-19alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-05Sturle SundeNF
no factor from 2^58 to 2^59