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
79089691Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 275
TF target 275
P-1
B1 = 830000
B2 = 21787500
LL
StatusDateUserResidueShift
Unverified2017-06-15Shnobel03CB1C94A83592__11817976
History
DateUserTypeResult
2017-06-15ShnobelC-LL
03CB1C94A83592__
2016-07-11AirSquirrelsNF
no factor from 2^74 to 2^75
2016-04-04Mark RoseNF
no factor from 2^63 to 2^64
2016-02-27James HeinrichNF
no factor from 2^73 to 2^74
2016-02-18BdotNF
no factor from 2^72 to 2^73
2016-01-27GregNF
no factor from 2^71 to 2^72
2016-01-24bamNF-PM1
B1=830000, B2=21787500
2013-06-29SMoffatNF
no factor from 2^70 to 2^71
2013-01-28K0HAXNF
no factor from 2^69 to 2^70
2013-01-23K0HAXNF
no factor from 2^68 to 2^69
2012-09-20AxelssonNF
no factor from 2^67 to 2^68
2011-05-12Carsten KossendeyNF
no factor from 2^66 to 2^67
2011-04-27Ian L AtteridgeNF
no factor from 2^65 to 2^66
2011-03-25S00030NF
no factor from 2^64 to 2^65