11 661 761 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
50757651487847	14	45.5	old

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-10-03	LaurV	EFCC425FA1ECC5C0	1	8180874	5	3

History

Date	User	Type	Result
2025-06-12	yuriy_5-1	NF	no factor from 2^70 to 2^71
2025-05-06	yuriy_5-1	NF	no factor from 2^69 to 2^70
2025-03-31	yuriy_5-1	NF	no factor from 2^68 to 2^69
2025-03-11	yuriy_5-1	NF-PM1	B1=6997056, B2=453435840
2024-08-21	yuriy_5-1	NF-PM1	B1=2800000, B2=5818231650
2021-10-03	Ben Delo	CERT	PRP Certification Proof certified good
2021-10-03	LaurV	C-PRP	M11661761/50757651487847 : EFCC425FA1ECC5C0 PRP proof power = 8 PRP: Verified Proof certified good