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
48388937Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShift
Verified2012-01-11rick90FBE654AC5310552037514
Verified2019-05-03tralvex90FBE654AC53105514489409
History
DateUserTypeResult
2019-05-03tralvexC-LL
90FBE654AC531055
2019-01-02Sid & AndyNF-PM1
B1=1000000, B2=20000000, E=12
2018-02-11TheJudgerNF
no factor from 2^72 to 2^73
2012-01-11rickC-LL
90FBE654AC531055
2011-12-15Craig MeyersNF
no factor from 2^70 to 2^72
2011-11-06kdgehmanNF
no factor from 2^69 to 2^70
2009-11-14-Anonymous-NF-PM1
B1=760000