78 871 103 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷⁵

TF target 2⁷⁵

P-1

B1 =	685000
B2 =	13700000

Status	Date	User	Residue	Shift
Verified	2017-12-06	owenw4rd	851A40DB3B657472	13988516
Verified	2024-09-20	-Anonymous-	851A40DB3B657472	78098344

History

Date	User	Type	Result
2024-09-20	-Anonymous-	C-LL	851A40DB3B657472
2017-12-06	owenw4rd	C-LL	851A40DB3B657472
2016-07-11	apocalypse	NF-PM1	B1=685000, B2=13700000, E=6
2016-06-27	Fredrik	NF	no factor from 2^74 to 2^75
2016-06-27	Fredrik	NF	no factor from 2^73 to 2^74
2016-06-27	Fredrik	NF	no factor from 2^72 to 2^73
2016-02-09	Judge Hale	NF	no factor from 2^71 to 2^72
2013-05-28	g0b	NF	no factor from 2^70 to 2^71
2013-01-26	vide	NF	no factor from 2^69 to 2^70
2013-01-14	Phantomas	NF	no factor from 2^68 to 2^69
2011-04-06	Carsten Kossendey	NF	no factor from 2^67 to 2^68
2011-01-25	Fred Cirera	NF	no factor from 2^66 to 2^67
2011-01-21	taz	NF	no factor from 2^65 to 2^66
2011-01-12	-Anonymous-	NF	no factor from 2^64 to 2^65