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
5696983Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 4500000
B2 = 6523035750
ECM
DigitsB1Curves
2550000104 / 280
Estimated T-Level: 21.9 ⓘ
LL
StatusDateUserResidueShift
Verified1999-09-22Bob Rinker49FFF28B7A8D4AEB5357883
Verified2000-10-15Michael Schiansky49FFF28B7A8D4AEB3791322
History
DateUserTypeResult
2024-01-15riccardo ubertiNF
no factor from 2^71 to 2^72
2022-10-28Sid & AndyNF-PM1
B1=4500000, B2=6523035750
2022-03-04mikrNF
no factor from 2^70 to 2^71
2020-12-14-Anonymous-NF
no factor from 2^69 to 2^70
2020-07-24TJAOINF
no factor from 2^68 to 2^69
2019-11-03GdSNF-PM1
B1=200000, B2=6000000, E=12
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2016-06-25Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^62
2015-08-29snme2pm1NF
no factor from 2^65 to 2^66
2014-12-01monstNF
no factor from 2^64 to 2^65
2014-11-30NesowaNF
no factor from 2^63 to 2^64
2011-05-12USAFSSNF-PM1
B1=65000, B2=1088750, E=6
2009-06-13Carsten KossendeyNF-PM1
B1=30000, B2=397500
2009-02-05GrunwalderGIMPNF
no factor from 2^62 to 2^63