55 387 639 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
6976221804618477479921	22	72.6	2011-11-12 02:35:19

History

Date	User	Type	Result
2022-06-09	LordJulius	NF	no factor from 2^69 to 2^70
2022-06-09	LordJulius	NF	no factor from 2^68 to 2^69
2022-06-09	LordJulius	NF	no factor from 2^67 to 2^68
2022-06-09	LordJulius	NF	no factor from 2^66 to 2^67
2022-06-09	LordJulius	NF	no factor from 2^1 to 2^66
2011-11-12	Jack The Ripper	F	Factor: 6976221804618477479921
2011-04-09	opyrt	NF	no factor from 2^70 to 2^71
2011-04-09	opyrt	NF	no factor from 2^69 to 2^70
2011-04-09	opyrt	NF	no factor from 2^68 to 2^69
2009-05-15	Inhumierer	NF	no factor from 2^67 to 2^68
2009-01-09	Wingo	NF	no factor from 2^66 to 2^67
2009-01-07	Wingo	NF	no factor from 2^65 to 2^66
2009-01-06	Never Odd Or Even	NF	no factor from 2^64 to 2^65
2008-12-25	1997rj7	NF	no factor from 2^63 to 2^64