17 876 141 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
91480004978230392841	20	66.3	2016-03-20 13:00:03

Status	Date	User	Residue	Shift
Verified (Factored)	2003-10-08	Sturle Sunde	9AA09308C403696C	10027132
Verified (Factored)	2006-10-01	Ars Technica Team Prime Rib	9AA09308C403696C	11630399

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2025-04-06	Extremofire	B60E183D3EFE486F	1	10243295	5	3
Verified	2025-07-10	Elysia	B60E183D3EFE486F	1	16764151	5	3

History

Date	User	Type	Result
2025-07-10	KIM	CERT	PRP Certification Proof certified good
2025-07-10	Elysia	C-PRP	M17876141/91480004978230392841 : B60E183D3EFE486F PRP proof power = 8 PRP: Verified Proof certified good
2025-04-06	Extremofire	C-PRP	M17876141/91480004978230392841 : B60E183D3EFE486F PRP proof power = 8 PRP: Verified PRP proof never uploaded
2016-03-20	Mark Rose	F	Factor: 91480004978230392841 / TF: 66-67*