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
4359781Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 6200000
B2 = 32177450760
ECM
DigitsB1Curves
2550000280 / 280
3025000064 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-11-21Mark Ridgwell9C31B05E909930000
Verified1999-11-24Tom Mossberg9C31B05E909930003594229
Verified2015-04-29MadPoo9C31B05E909930004341234
History
DateUserTypeResult
2022-12-19DRobinsonPENF-PM1
B1=6200000, B2=32177450760
2021-01-29-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-29-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-25-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-25-Anonymous-NF
no factor from 2^68 to 2^69
2018-10-27chuenkitNF
no factor from 2^67 to 2^68
2018-10-09Ismo LaitelaNF-PM1
B1=2189464, B2=63494458, E=12
2018-05-02chuenkitNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-18snme2pm1NF
no factor from 2^65 to 2^66
2015-04-29MadPooC-LL
9C31B05E90993000
2014-08-04lycornNF
no factor from 2^64 to 2^65
2014-08-03JayderNF
no factor from 2^63 to 2^64
2012-01-15GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-12-28Squeeky_SquirrelNF-PM1
B1=110000, B2=2227500, E=6
2010-11-17markrNF
no factor from 2^61 to 2^62
2009-08-13Carsten KossendeyNF-PM1
B1=25000, B2=356250