56 309 941 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
21878160101311995365897	23	74.2	2012-07-13 01:11:32

P-1 factors

Date	Factor	B1	B2
2012-07-13	21878160101311995365897	545000	0

History

Date	User	Type	Result
2022-06-27	LordJulius	NF	no factor from 2^1 to 2^63
2012-07-13	Jwb52z	F-PM1	Factor: 21878160101311995365897
2012-05-11	Craig Meyers	NF	no factor from 2^71 to 2^72
2011-09-07	ANONYMOUS	NF	no factor from 2^70 to 2^71
2011-08-19	Johan Viljoen	NF	no factor from 2^69 to 2^70
2011-04-15	eon_blue_apocalypse	NF	no factor from 2^68 to 2^69
2009-05-21	Gnorfe	NF	no factor from 2^67 to 2^68
2008-07-17	Sturle Sunde	NF	no factor from 2^66 to 2^67
2008-07-16	Sturle Sunde	NF	no factor from 2^65 to 2^66
2008-07-16	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-07-15	Sturle Sunde	NF	no factor from 2^63 to 2^64