12 004 453 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
72026719	8	26.1	old
1128418583	10	30.1	2008-09-08 07:45:09

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-12-22	mrh	F067280DE82FB7EB	2	3232936	5	3

History

Date	User	Type	Result
2023-06-13	nordi	NF-PM1	B1=400000, B2=428459850
2021-12-22	C.D.B.	CERT	PRP Certification Proof certified good
2021-12-22	mrh	C-PRP	M12004453/72026719/1128418583 : F067280DE82FB7EB PRP proof power = 8 PRP: Verified Proof certified good
2021-11-24	nordi	NF-PM1	B1=400000, B2=12000000
2021-11-21	nordi	NF-PM1	B1=400000
2008-09-08	Will Edgington	F	Factor: 1128418583