7 981 283 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
15962567	8	23.9	old
263972953943	12	37.9	2008-09-08 03:43:23
3613047001271	13	41.7	2008-09-08 03:43:23

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-04	_p95holder_	1EAEA5E70359FDD7	3	3408888	5	3
Verified	2019-12-20	arnaud	1EAEA5E70359FDD7	3	5722108	5	3

History

Date	User	Type	Result
2024-02-23	Stef42	NF-PM1	B1=2500000, B2=4858389900
2019-12-20	arnaud	C-PRP	M7981283/15962567/263972953943/3613047001271 : 1EAEA5E70359FDD7 PRP: Verified PRP without proof (not generated)
2018-07-04	_p95holder_	C-PRP	M7981283/15962567/263972953943/3613047001271 : 1EAEA5E70359FDD7 PRP: Verified PRP without proof (not generated)
2008-09-08	Will Edgington	F	Factor: 3613047001271
2008-09-08	Will Edgington	F	Factor: 263972953943