12 903 049 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
181468481137	12	37.4	old
39915840142481	14	45.2	2008-09-08 08:41:31

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-05-22	kutens	7FB6937650B97C7E	2	9133	5	3

History

Date	User	Type	Result
2022-05-22	Gyuri	CERT	PRP Certification Proof certified good
2022-05-22	kutens	C-PRP	M12903049/181468481137/39915840142481 : 7FB6937650B97C7E PRP proof power = 8 PRP: Verified Proof certified good
2022-05-20	nordi	NF-PM1	B1=400000, B2=321348300
2022-05-16	nordi	NF-PM1	B1=400000
2008-09-08	Will Edgington	F	Factor: 39915840142481