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

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MnStatusDetails
71272301Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 660000
B2 = 13365000
LL
StatusDateUserResidueShift
Verified2016-11-17ANONYMOUS1CC5AEC795709ED929829693
Verified2024-09-15Vitalii1CC5AEC795709ED928917167
History
DateUserTypeResult
2024-09-15VitaliiC-LL
1CC5AEC795709ED9
2016-11-17ANONYMOUSC-LL
1CC5AEC795709ED9
2016-07-22-Anonymous-NF
no factor from 2^74 to 2^75
2015-02-01TheJudgerNF-PM1
B1=660000, B2=13365000, E=6
2014-11-11BigBrotherNF
no factor from 2^73 to 2^74
2014-11-11BigBrotherNF
no factor from 2^72 to 2^73
2014-11-11BigBrotherNF
no factor from 2^71 to 2^72
2014-04-28HBendtzNF
no factor from 2^70 to 2^71
2013-09-06NumberwangNF
no factor from 2^69 to 2^70
2010-11-09PrimeCruncherNF
no factor from 2^68 to 2^69
2010-11-04PrimeCruncherNF
no factor from 2^67 to 2^68
2010-06-25mikeatttecNF
no factor from 2^66 to 2^67
2010-03-25Kingoff AcupunctureNF
no factor from 2^65 to 2^66
2010-03-15Sturle SundeNF
no factor from 2^64 to 2^65
2008-10-21Wojciech FlorekNF
no factor to 2^64