999 721 213 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: 3 known prime factors

Factored

Factor	Digits	Bits	Date
15995539409	11	33.9	2008-05-05 05:55:47
111968775857	12	36.7	2012-05-01 05:15:05
1857204555127428833	19	60.7	2015-12-26 16:00:08

History

Date	User	Type	Result
2025-03-12	mikr	F	Factors: 15995539409,111968775857 / TF: 69-71
2022-07-21	onlinegame	NF	no factor from 2^68 to 2^69
2022-04-07	James Heinrich	F	Factor: 1857204555127428833 / TF: 1-67
2022-04-07	James Heinrich	F	Factor: 111968775857 / TF: 1-67
2022-04-07	James Heinrich	F	Factor: 15995539409 / TF: 1-67
2021-12-22	ViliamF	NF	no factor from 2^67 to 2^68
2015-12-26	Conductor	F	Factor: 1857204555127428833 / TF: 1-62
2012-05-01	nextPrime	F	Factor: 111968775857