6 916 681 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
25315667543675295257	20	64.5	2009-06-11 07:49:38

Status	Date	User	Residue	Shift
Verified (Factored)	2000-03-01	Andrew Piatek	92E76D43012EC80F	925255
Verified (Factored)	2002-02-03	Justin	92E76D43012EC80F	1194260

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-24	Oliver Kruse	267C26AA8E29335B	1	6754129	5	3
Verified	2019-01-23	ATH	267C26AA8E29335B	1	240761	5	3

History

Date	User	Type	Result
2023-12-27	Stef42	NF-PM1	B1=569000, B2=1280664000
2019-01-23	ATH	C-PRP	M6916681/25315667543675295257 : 267C26AA8E29335B PRP: Verified PRP without proof (not generated)
2018-01-24	Oliver Kruse	C-PRP	M6916681/25315667543675295257 : 267C26AA8E29335B PRP: Verified PRP without proof (not generated)
2009-06-11	Roman Maznichenko	F	Factor: 25315667543675295257