7 861 099 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
188666377	9	27.5	old
1021942871	10	29.9	2008-09-08 03:40:51

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-05-30	_p95holder_	86E8715E40A78B0C	2	6499024	5	3
Verified	2019-10-28	arnaud	86E8715E40A78B0C	2	7028421	5	3

History

Date	User	Type	Result
2024-01-31	Stef42	NF-PM1	B1=950000, B2=1968826860
2019-10-28	arnaud	C-PRP	M7861099/188666377/1021942871 : 86E8715E40A78B0C PRP: Verified PRP without proof (not generated)
2018-05-30	_p95holder_	C-PRP	M7861099/188666377/1021942871 : 86E8715E40A78B0C PRP: Verified PRP without proof (not generated)
2008-09-08	Will Edgington	F	Factor: 1021942871

Username
Password