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
161718857No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1378000
B2 = 1369891380
History
DateUserTypeResult
2025-09-20GregNF
no factor from 2^76 to 2^78
2024-10-11Luke DurantNF-PM1
B1=1378000, B2=1369891380
2024-09-03SRBaseNF
no factor from 2^75 to 2^76
2023-03-04SRBaseNF
no factor from 2^74 to 2^75
2021-11-25SRBaseNF
no factor from 2^73 to 2^74
2019-01-09workerthreadNF
no factor from 2^72 to 2^73
2018-12-21workerthreadNF
no factor from 2^71 to 2^72
2018-11-10proxy2222NF
no factor from 2^70 to 2^71
2018-06-12proxy2222NF
no factor from 2^69 to 2^70
2017-04-11XolotlNF
no factor from 2^68 to 2^69
2016-03-26XZTNF
no factor from 2^67 to 2^68
2015-05-08sasakiNF
no factor from 2^66 to 2^67
2013-02-27Charles A. MorrisNF
no factor from 2^65 to 2^66
2011-02-04runeskNF
no factor from 2^64 to 2^65
2010-06-30sasaki3NF
no factor from 2^63 to 2^64