5 547 931 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
6865209259523106091081	22	72.5	2010-05-01 15:22:19

ECM

Digits	B1	Curves
25	50000	60 / 280

Estimated T-Level: 21.1 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-12-01	Bjørn Roger Larsen	B1EA35B6D54F8212	3049608
Verified (Factored)	2000-08-24	Bob Tykulsker	B1EA35B6D54F8212	4155443

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-08	trebor	5C9D8DCA9D90785D	1	3207033	5	3
Verified	2018-03-31	kkmrkkblmbrbk	5C9D8DCA9D90785D	1	1479923	5	3

History

Date	User	Type	Result
2023-05-12	This -Anonymous-	NF-PM1	B1=100000, B2=2000000, E=6
2018-03-31	kkmrkkblmbrbk	C-PRP	M5547931/6865209259523106091081 : 5C9D8DCA9D90785D PRP: Verified PRP without proof (not generated)
2017-12-08	trebor	C-PRP	M5547931/6865209259523106091081 : 5C9D8DCA9D90785D PRP: Verified PRP without proof (not generated)
2010-05-01	Squeeky_Squirrel	F-PM1	Factor: 6865209259523106091081
2009-04-23	GrunwalderGIMP	NF	no factor from 2^62 to 2^63