2 490 251 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
4347978247	10	32.0	old
91157117970171826351	20	66.3	2018-03-05 22:56:03

ECM

Digits	B1	Curves
25	50000	59 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-14	Oliver Kruse	2C636C676397660E	1	1066290	5	3
Verified (Factored)	2017-11-30	Yizhe Huang	2C636C676397660E	1	175182	5	3
Verified	2018-03-09	Oliver Kruse	2C636C676397660E	2	1304142	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2018-03-09	Oliver Kruse	C-PRP	M2490251/4347978247/91157117970171826351 : 2C636C676397660E PRP: Verified PRP without proof (not generated)
2018-03-05	Oliver Kruse	F-ECM	Factor: 91157117970171826351 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-30	Yizhe Huang	C-PRP	M2490251/4347978247 : 2C636C676397660E PRP: Verified PRP without proof (not generated)
2017-10-14	Oliver Kruse	C-PRP	M2490251/4347978247 : 2C636C676397660E PRP: Verified PRP without proof (not generated)