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
157601971No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 945000
B2 = 91731948
History
DateUserTypeResult
2025-06-20zhangstNF
no factor from 2^77 to 2^78
2025-03-25Gordon BowerNF
no factor from 2^76 to 2^77
2024-10-02Ryan PropperNF-PM1
B1=945000, B2=91731948
2024-08-22SRBaseNF
no factor from 2^75 to 2^76
2023-02-22SRBaseNF
no factor from 2^74 to 2^75
2021-11-20SRBaseNF
no factor from 2^73 to 2^74
2017-10-13Earle LoweNF
no factor from 2^72 to 2^73
2017-10-13Earle LoweNF
no factor from 2^71 to 2^72
2017-01-29guruNF
no factor from 2^70 to 2^71
2017-01-29guruNF
no factor from 2^69 to 2^70
2017-01-24Adam BuranNF
no factor from 2^68 to 2^69
2016-05-11rubikvn2100NF
no factor from 2^67 to 2^68
2015-04-20S. EichsteiningerNF
no factor from 2^66 to 2^67
2013-02-11sasaki3NF
no factor from 2^65 to 2^66
2011-01-30RichardNF
no factor from 2^64 to 2^65