Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
47381753Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 560000
B2 = 16240000
LL
StatusDateUserResidueShift
Verified2009-10-23lindedB8E2BC88CF219AFB32033275
Verified2017-07-30-Anonymous-B8E2BC88CF219AFB43665464
History
DateUserTypeResult
2024-05-29ChuckNF
no factor from 2^68 to 2^69
2018-01-20ktonyNF
no factor from 2^72 to 2^73
2017-07-30-Anonymous-C-LL
B8E2BC88CF219AFB
2015-12-04-Anonymous-NF
no factor from 2^71 to 2^72
2015-05-28Mark RoseNF
no factor from 2^70 to 2^71
2015-05-23Architects CubedNF
no factor from 2^69 to 2^70
2013-03-07Carsten KossendeyNF
no factor from 2^68 to 2^69
2009-10-23lindedC-LL
B8E2BC88CF219AFB
2009-09-13lindedNF-PM1
B1=560000, B2=16240000