15 200 909 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
364821817	9	28.4	old
1055551120961	13	39.9	2008-09-08 11:26:28

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-06-28	Perig	51DA9DF3433A2730	2	10042026	5	3

History

Date	User	Type	Result
2023-06-28	David Barina	CERT	PRP Certification Proof certified good
2023-06-28	Perig	C-PRP	M15200909/364821817/1055551120961 : 51DA9DF3433A2730 PRP proof power = 8 PRP: Verified Proof certified good
2023-05-28	nordi	NF-PM1	B1=400000, B2=407843436
2023-05-10	nordi	NF-PM1	B1=400000
2022-04-24	Lisander Viaene	NF	no factor from 2^67 to 2^68
2008-09-08	Will Edgington	F	Factor: 1055551120961