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
6439493TF
No factors below 272
TF target 266
P-1
B1 = 4000000
B2 = 18004726740
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Verified1999-01-10George Pouliot6315795D996A1AD90
Verified2002-01-08jacek skorka6315795D996A1AD93937557
History
DateUserTypeResult
2023-05-16linamentNF-PM1
B1=4000000, B2=18004726740
2023-05-15linamentNF-PM1
B1=3999900
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2021-03-02takahashiNF
no factor from 2^69 to 2^70
2020-05-17takahashiNF
no factor from 2^68 to 2^69
2020-04-09takahashiNF-PM1
B1=700000, B2=15000000, E=12
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2016-04-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-24snme2pm1NF
no factor from 2^65 to 2^66
2014-08-05lycornNF
no factor from 2^64 to 2^65
2014-08-02NesowaNF
no factor from 2^63 to 2^64
2011-08-31markrNF-PM1
B1=165000, B2=3630000, E=6