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
46003939Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 555000
B2 = 16788750
LL
StatusDateUserResidueShift
Verified2008-07-18davy818554907FD8218B5948051
Verified2016-01-01MadPoo818554907FD8218B2778275
History
DateUserTypeResult
2018-03-05monstNF
no factor from 2^72 to 2^73
2016-01-01MadPooC-LL
818554907FD8218B
2015-12-05AirSquirrelsNF
no factor from 2^71 to 2^72
2015-10-28XZTNF
no factor from 2^70 to 2^71
2015-08-23Bruno VictalNF
no factor from 2^69 to 2^70
2013-11-16sasakiNF
no factor from 2^68 to 2^69
2008-07-18davyC-LL
818554907FD8218B
2008-06-18davyNF-PM1
B1=560000, B2=16660000, E=6
2008-02-23Sturle SundeNF-PM1
B1=555000, B2=16788750, E=6
2007-12-07Andi47NF
no factor from 2^65 to 2^66
2007-12-07Team_BunduNF
no factor from 2^64 to 2^65
2007-12-06Team_BunduNF
no factor from 2^63 to 2^64