1 350 779 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
2619995483053295937244154222207	31	101.0	2014-07-20 00:27:58

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)		Jason Kline	8C9CFC300273ADA6	0
Verified (Factored)	1998-08-09	James Griffin	8C9CFC300273ADA6	0
Verified (Factored)	2010-02-25	Bruce A Metcalf	8C9CFC300273ADA6	1254120

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	Oliver Kruse	B395D0FB77247220	1	0	1	3
Verified	2017-10-24	kkmrkkblmbrbk	B395D0FB77247220	1	60749	1	3

P-1 factors

Date	Factor	B1	B2
2014-07-20	2619995483053295937244154222207	4258086	163138092

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2017-10-24	kkmrkkblmbrbk	C-PRP	M1350779/2619995483053295937244154222207 : B395D0FB77247220 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1350779/2619995483053295937244154222207 : B395D0FB77247220 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-07-20	mikr	F-PM1	Factor: 2619995483053295937244154222207
2014-04-28	-Anonymous-	NF-PM1	B1=175000
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2010-02-25	Bruce A Metcalf	C-LL	8C9CFC300273ADA6
2009-02-17	Sturle Sunde	NF	no factor from 2^60 to 2^61