15 501 571 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
248025137	9	27.9	old
568380602287	12	39.0	2008-09-08 11:33:17

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-08-12	JacobZ	6AADD0BA6EEABE0D	2	1757257	5	3

History

Date	User	Type	Result
2023-08-12	curtisc	CERT	PRP Certification Proof certified good
2023-08-12	JacobZ	C-PRP	M15501571/248025137/568380602287 : 6AADD0BA6EEABE0D PRP proof power = 8 PRP: Verified Proof certified good
2023-07-17	nordi	NF-PM1	B1=480000, B2=308477400
2023-06-29	nordi	NF-PM1	B1=480000
2008-09-08	Will Edgington	F	Factor: 568380602287