1 338 299 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
309969403556263152140744874631	30	98.0	2014-07-11 23:54:14

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		nmainer	DDC3D21C0D110E5D	0
Verified (Factored)		Cornelius Caesar	DDC3D21C0D110E5D	0
Verified (Factored)	2010-03-17	Bruce A Metcalf	DDC3D21C0D110E5D	220024

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	Oliver Kruse	7059EDE9531EEA3D	1	0	1	3
Verified	2017-10-24	kkmrkkblmbrbk	7059EDE9531EEA3D	1	93109	1	3

P-1 factors

Date	Factor	B1	B2
2014-07-11	309969403556263152140744874631	4081679	0

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2017-10-24	kkmrkkblmbrbk	C-PRP	M1338299/309969403556263152140744874631 : 7059EDE9531EEA3D PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1338299/309969403556263152140744874631 : 7059EDE9531EEA3D PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-07-11	mikr	F-PM1	Factor: 309969403556263152140744874631
2014-04-27	-Anonymous-	NF-PM1	B1=175000
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-09-18	Axelsson	NF	no factor from 2^61 to 2^62
2009-02-18	Sturle Sunde	NF	no factor from 2^60 to 2^61