15 242 441 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
162423451297	12	37.2	old
10950779312041	14	43.3	2008-09-08 11:27:27
815320528555781669417777753779553127401	39	129.3	2023-06-02 00:46:42

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-07-05	g0b	D99EE4F3366BFDD7	3	1258125	5	3

P-1 factors

Date	Factor	B1	B2
2023-06-02	815320528555781669417777753779553127401	400000	418099500

History

Date	User	Type	Result
2023-07-05	Pierre Abbat	CERT	PRP Certification Proof certified good
2023-07-05	g0b	C-PRP	M15242441/162423451297/10950779312041/815320528555781669417777753779553127401 : D99EE4F3366BFDD7 PRP proof power = 8 PRP: Verified Proof certified good
2023-06-02	nordi	F-PM1	Factor: 815320528555781669417777753779553127401 / (P-1, B1=400000, B2=418099500)
2023-05-21	nordi	NF-PM1	B1=400000
2008-09-08	Will Edgington	F	Factor: 10950779312041