12 010 849 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
878113170391	12	39.7	old
1392081420799	13	40.3	2008-09-08 07:45:13

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-12-26	Joe S.	49D9C39661EB963F	2	8079465	5	3

History

Date	User	Type	Result
2023-06-15	nordi	NF-PM1	B1=400000, B2=428459850
2021-12-26	Ben Delo	CERT	PRP Certification Proof certified good
2021-12-26	Joe S.	C-PRP	M12010849/878113170391/1392081420799 : 49D9C39661EB963F PRP proof power = 8 PRP: Verified Proof certified good
2021-12-06	nordi	NF-PM1	B1=400000, B2=109909800
2021-11-22	nordi	NF-PM1	B1=400000
2008-09-08	Will Edgington	F	Factor: 1392081420799