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
48665653Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 555000
B2 = 12487500
LL
StatusDateUserResidueShift
Verified2009-12-30AO6E40F7A39645CF7D25741068
Bad2018-07-03ARLumpkin56244E0B8F76462121164587
Verified2018-07-19Egor K6E40F7A39645CF7D9367380
History
DateUserTypeResult
2018-07-19Egor KC-LL
6E40F7A39645CF7D
2018-07-03ARLumpkinC-LL
56244E0B8F764621
2018-02-20Andrew BNF
no factor from 2^72 to 2^73
2016-02-23Mark RoseNF
no factor from 2^63 to 2^64
2015-11-22-Anonymous-NF
no factor from 2^71 to 2^72
2015-09-11Mark RoseNF
no factor from 2^70 to 2^71
2015-09-02Sid & AndyNF
no factor from 2^69 to 2^70
2009-12-30AOC-LL
6E40F7A39645CF7D
2009-11-27AONF-PM1
B1=555000, B2=12487500
2008-12-28tmorrowNF
no factor from 2^68 to 2^69
2008-12-25tmorrowNF
no factor from 2^67 to 2^68
2008-12-24tmorrowNF
no factor from 2^66 to 2^67
2008-12-23tmorrowNF
no factor from 2^65 to 2^66
2008-12-23tmorrowNF
no factor from 2^64 to 2^65