2 684 939 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
76075249901461988713	20	66.0	2009-03-06 23:17:25

ECM

Digits	B1	Curves
25	50000	154 / 280

Estimated T-Level: 22.8 ⓘ

TF below 2^71 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Timo Aaltonen and friends	E4A0856C0BB621BA	0
Verified (Factored)	1999-04-23	David Winchester	E4A0856C0BB621BA	824334

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-19	Oliver Kruse	7625E415698608A0	1	2172897	5	3
Verified	2017-12-04	kkmrkkblmbrbk	7625E415698608A0	1	1413550	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-04	kkmrkkblmbrbk	C-PRP	M2684939/76075249901461988713 : 7625E415698608A0 PRP: Verified PRP without proof (not generated)
2017-10-19	Oliver Kruse	C-PRP	M2684939/76075249901461988713 : 7625E415698608A0 PRP: Verified PRP without proof (not generated)
2009-03-06	paulie	F-ECM	Factor: 76075249901461988713
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61