Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
48719581Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 555000
B2 = 12071250
LL
StatusDateUserResidueShift
Verified2010-03-30curtisc64C272A5B58096B447070327
Verified2019-06-06rahusky64C272A5B58096B48999887
History
DateUserTypeResult
2024-05-05James HeinrichNF
no factor from 2^68 to 2^69
2019-06-06rahuskyC-LL
64C272A5B58096B4
2018-02-17Mark RoseNF
no factor from 2^72 to 2^73
2013-09-07Architects CubedNF-PM1
B1=555000, B2=12071250, E=12
2013-09-04Architects CubedNF
no factor from 2^71 to 2^72
2012-09-05bcp19NF
no factor from 2^70 to 2^71
2012-09-05bcp19NF
no factor from 2^69 to 2^70
2010-03-30curtiscC-LL
64C272A5B58096B4