28 723 633 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
492996906017858767673	21	68.7	2011-10-08 15:13:19

Status	Date	User	Residue	Shift
Verified (Factored)	2006-02-15	ailsa edwards	8EFA1BEA67D5657A	26808370

History

Date	User	Type	Result
2024-05-12	James Heinrich	F	Factor: 492996906017858767673 / TF: 68-71
2011-10-08	Carsten Kossendey	F	Factor: 492996906017858767673
2011-10-08	Carsten Kossendey	NF	no factor from 2^68 to 2^71

Username
Password