2 622 637 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
6400708494123717057362761	25	82.4	2010-06-13 23:59:32

ECM

Digits	B1	Curves
25	50000	5 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Larry English	11C6FA5B93FAF25F	0
Verified (Factored)	1999-04-02	Andrew Haveland-Robinson	11C6FA5B93FAF25F	573685

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-17	Oliver Kruse	F2C104E63E142ACC	1	167964	5	3
Verified	2017-12-02	kkmrkkblmbrbk	F2C104E63E142ACC	1	1182927	5	3

History

Date	User	Type	Result
2022-03-11	LordJulius	NF	no factor from 2^1 to 2^60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	kkmrkkblmbrbk	C-PRP	M2622637/6400708494123717057362761 : F2C104E63E142ACC PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M2622637/6400708494123717057362761 : F2C104E63E142ACC PRP: Verified PRP without proof (not generated)
2010-06-13	KAMCOBILL	F-ECM	Factor: 6400708494123717057362761
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61