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
157871981No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1343000
B2 = 1332576960
History
DateUserTypeResult
2025-06-17mikehike75NF
no factor from 2^77 to 2^78
2025-04-24RichardNF
no factor from 2^76 to 2^77
2024-10-02Luke DurantNF-PM1
B1=1343000, B2=1332576960
2017-11-18Oliver KruseNF
no factor from 2^69 to 2^76
2017-02-07Choi4KANGNF
no factor from 2^68 to 2^69
2016-05-11tmorrowNF
no factor from 2^67 to 2^68
2015-04-22tscNF
no factor from 2^66 to 2^67
2013-02-12MucolNF
no factor from 2^65 to 2^66
2011-01-28runeskNF
no factor from 2^64 to 2^65
2010-06-27Torchwood InstituteNF
no factor from 2^63 to 2^64