7 898 221 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
47389327	8	25.5	old
2590616489	10	31.3	2008-09-08 03:41:38

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-20	_p95holder_	6661E1F2FEED0465	2	6006412	5	3
Verified	2019-11-12	marssystems	6661E1F2FEED0465	2	549005	5	3

History

Date	User	Type	Result
2024-02-02	Stef42	NF-PM1	B1=950000, B2=1968826860
2019-11-12	marssystems	C-PRP	M7898221/47389327/2590616489 : 6661E1F2FEED0465 PRP: Verified PRP without proof (not generated)
2018-06-20	_p95holder_	C-PRP	M7898221/47389327/2590616489 : 6661E1F2FEED0465 PRP: Verified PRP without proof (not generated)
2008-09-08	Will Edgington	F	Factor: 2590616489