91 999 381 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 PRP test says not-prime

TF

No factors below 2⁷⁷

TF target 2⁷⁵

P-1

B1 =	1050000
B2 =	32025000

Status	Date	User	Residue	Shift	Type	Base
Unverified	2020-01-18	ky0uraku	B3AE78DC8076E0__	49360571	1	3

History

Date	User	Type	Result
2020-01-18	ky0uraku	C-PRP	B3AE78DC8076E0__ PRP without proof (not generated)
2019-02-22	Chuck	NF	no factor from 2^76 to 2^77
2017-10-15	Strolling Jellyfish	NF	no factor from 2^75 to 2^76
2017-10-15	Strolling Jellyfish	NF	no factor from 2^74 to 2^75
2017-10-15	Strolling Jellyfish	NF	no factor from 2^73 to 2^74
2017-10-15	Strolling Jellyfish	NF	no factor from 2^72 to 2^73
2017-10-15	Strolling Jellyfish	NF	no factor from 2^71 to 2^72
2014-11-04	timbit	NF-PM1	B1=1050000, B2=32025000, E=6
2014-09-12	shauge	NF	no factor from 2^70 to 2^71
2014-07-17	Mark Filipski	NF	no factor from 2^69 to 2^70
2014-07-14	Mark Filipski	NF	no factor from 2^68 to 2^69
2014-07-09	Mark Filipski	NF	no factor from 2^67 to 2^68
2014-04-09	ANONYMOUS	NF	no factor from 2^66 to 2^67
2013-06-28	David Campeau	NF	no factor from 2^65 to 2^66
2011-01-08	Architects Cubed	NF	no factor from 2^64 to 2^65