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
28945117Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 270
P-1
B1 = 325000
B2 = 6418750
LL
StatusDateUserResidueShift
Bad2005-09-03Roger M. PearsonA46345D55614AC1716629036
Verified2006-10-01Eugene ChertokBC39F244C8C889B514068357
Verified2013-05-30garoBC39F244C8C889B518843541
History
DateUserTypeResult
2024-05-12James HeinrichNF
no factor from 2^68 to 2^69
2021-10-06TheJudgerNF
no factor from 2^74 to 2^75
2021-09-10TheJudgerNF
no factor from 2^73 to 2^74
2021-08-24TheJudgerNF
no factor from 2^72 to 2^73
2021-08-22TheJudgerNF
no factor from 2^71 to 2^72
2021-02-06mikrNF
no factor from 2^70 to 2^71
2017-03-21ramgeisNF
no factor from 2^69 to 2^70
2013-05-30garoC-LL
BC39F244C8C889B5
2011-12-08Carsten KossendeyNF
no factor from 2^68 to 2^69