2 777 581 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
133323889	9	27.0	old
488753651334228312881	21	68.7	2018-04-26 17:51:13

ECM

Digits	B1	Curves
25	50000	4 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-21	alpertron	B829923BD3A35FDE	1	2643094	5	3
Verified (Factored)	2017-11-15	Oliver Kruse	B829923BD3A35FDE	1	2656944	5	3
Verified	2018-04-26	ATH	B829923BD3A35FDE	2	2164582	5	3

History

Date	User	Type	Result
2022-11-10	Kevin_9611	NF-PM1	B1=400000, B2=95793390
2018-04-26	ATH	C-PRP	M2777581/133323889/488753651334228312881 : B829923BD3A35FDE PRP: Verified PRP without proof (not generated)
2018-04-26	BanWaiLun	F-ECM	Factor: 488753651334228312881 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-15	Oliver Kruse	C-PRP	M2777581/133323889 : B829923BD3A35FDE PRP: Verified PRP without proof (not generated)
2017-10-21	alpertron	C-PRP	M2777581/133323889 : B829923BD3A35FDE PRP: Verified PRP without proof (not generated)