61 897 621 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
53920894992492188917351	23	75.5	2013-04-28 08:59:25

P-1 factors

Date	Factor	B1	B2
2013-04-28	53920894992492188917351	580000	0

History

Date	User	Type	Result
2022-03-29	LordJulius	NF	no factor from 2^62 to 2^63
2013-04-28	Jwb52z	F-PM1	Factor: 53920894992492188917351
2013-02-19	RichD0	NF	no factor from 2^72 to 2^73
2013-02-12	Jerry Hallett	NF	no factor from 2^71 to 2^72
2012-04-28	Xyzzy	NF	no factor from 2^70 to 2^71
2012-04-28	Xyzzy	NF	no factor from 2^69 to 2^70
2009-07-16	Misha O	NF	no factor from 2^68 to 2^69
2009-02-28	-Anonymous-	NF	no factor from 2^67 to 2^68
2009-02-27	Atanas Todorov	NF	no factor from 2^66 to 2^67
2009-02-19	Atanas Todorov	NF	no factor from 2^65 to 2^66
2009-02-12	rick	NF	no factor from 2^64 to 2^65
2009-02-09	Sturle Sunde	NF	no factor from 2^63 to 2^64