87 885 569 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

TF

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	715000
B2 =	14121250

Status	Date	User	Residue	Shift
Unverified	2019-02-17	Sergey Nosov	ED4D0CF84D7F7F__	1295492

History

Date	User	Type	Result
2019-02-17	Sergey Nosov	C-LL	ED4D0CF84D7F7F__
2018-07-23	Oliver Kruse	NF-PM1	B1=715000, B2=14121250, E=12
2018-04-13	Strolling Jellyfish	NF	no factor from 2^75 to 2^76
2018-04-13	Strolling Jellyfish	NF	no factor from 2^74 to 2^75
2017-06-30	-Anonymous-	NF	no factor from 2^73 to 2^74
2017-06-30	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-06-30	-Anonymous-	NF	no factor from 2^71 to 2^72
2014-09-04	Ryan Propper	NF	no factor from 2^70 to 2^71
2014-04-06	SWL551	NF	no factor from 2^69 to 2^70
2014-01-29	driveByUpgrades	NF	no factor from 2^68 to 2^69
2013-12-25	Carsten Kossendey	NF	no factor from 2^67 to 2^68
2013-06-22	SMoffat	NF	no factor from 2^66 to 2^67
2013-03-08	Freaks32	NF	no factor from 2^65 to 2^66
2010-11-19	Architects Cubed	NF	no factor from 2^64 to 2^65