1 728 323 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
2770588185151	13	41.3	old
626507119632976606844447	24	79.1	2020-06-11 18:00:31

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	16A57C7EC521BDF3	1	0	1	3
Verified (Factored)	2017-10-19	Oliver Kruse	16A57C7EC521BDF3	1	1194080	1	3
Verified	2020-06-12	Luigi Morelli	3242107F192DCA17	2	1523616	5	3
Verified	2020-06-13	marssystems	3242107F192DCA17	2	97812	5	3

History

Date	User	Type	Result
2020-06-13	marssystems	C-PRP	M1728323/2770588185151/626507119632976606844447 : 3242107F192DCA17 PRP: Verified PRP without proof (not generated)
2020-06-12	Luigi Morelli	C-PRP	M1728323/2770588185151/626507119632976606844447 : 3242107F192DCA17 PRP: Verified PRP without proof (not generated)
2020-06-11	nordi	F-ECM	Factor: 626507119632976606844447 / (ECM curve 53, B1=50000, B2=5000000, Sigma=166730199216302)
2017-10-19	Oliver Kruse	C-PRP	M1728323/2770588185151 : 16A57C7EC521BDF3 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1728323/2770588185151 : 16A57C7EC521BDF3 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12