1 744 231 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
205346926975946273505709481	27	87.4	2008-07-21 13:18:59

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	108 / 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)		Ed Knapton	244CEA3162094947	0
Verified (Factored)	1998-12-13	Sergey Tochilov	244CEA3162094947	487806

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	BB5047D397B3A3F6	1	0	1	3
Verified	2017-10-19	Oliver Kruse	BB5047D397B3A3F6	1	55662	1	3

History

Date	User	Type	Result
2017-10-19	Oliver Kruse	C-PRP	M1744231/205346926975946273505709481 : BB5047D397B3A3F6 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1744231/205346926975946273505709481 : BB5047D397B3A3F6 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-21	James Heinrich	F-ECM	Factor: 205346926975946273505709481