6 958 177 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
12223966994230950313	20	63.4	2012-08-21 20:11:47

Status	Date	User	Residue	Shift
Verified (Factored)	1999-05-02	Brian Tenney	F49E910D707B6D7D	0
Verified (Factored)	2001-11-03	Matthijs Wolters	F49E910D707B6D7D	6226754

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-27	Oliver Kruse	56B6EDC750523C54	1	3656558	5	3
Verified	2019-02-10	Ruzovej	56B6EDC750523C54	1	2003081	5	3

P-1 factors

Date	Factor	B1	B2
2012-08-21	12223966994230950313	85000	1508750

History

Date	User	Type	Result
2023-09-16	Tha	NF-PM1	B1=3500000, B2=11589057480
2019-02-10	Ruzovej	C-PRP	M6958177/12223966994230950313 : 56B6EDC750523C54 PRP: Verified PRP without proof (not generated)
2018-01-27	Oliver Kruse	C-PRP	M6958177/12223966994230950313 : 56B6EDC750523C54 PRP: Verified PRP without proof (not generated)
2012-08-21	Nesowa	F-PM1	Factor: 12223966994230950313