13 206 607 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
237718927	9	27.8	old
999911413179577	15	49.8	2008-09-08 09:26:55

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-06-21	XZT	D907318F6746416C	2	11448558	5	3

History

Date	User	Type	Result
2022-06-21	Section 31	CERT	PRP Certification Proof certified good
2022-06-21	XZT	C-PRP	M13206607/237718927/999911413179577 : D907318F6746416C PRP proof power = 8 PRP: Verified Proof certified good
2022-06-13	nordi	NF-PM1	B1=300000, B2=210129150
2022-06-10	nordi	NF-PM1	B1=300000
2008-09-08	Will Edgington	F	Factor: 999911413179577