1 714 759 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
238746547661793414511	21	67.7	2014-01-16 09:56:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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	021F8E5E871D0D19	0
Verified (Factored)	1998-11-28	Robert Dunn	021F8E5E871D0D19	1410702

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	3F3F27DAFEA4F5CC	1	0	1	3
Verified	2017-10-19	Oliver Kruse	3F3F27DAFEA4F5CC	1	396445	1	3

History

Date	User	Type	Result
2017-10-19	Oliver Kruse	C-PRP	M1714759/238746547661793414511 : 3F3F27DAFEA4F5CC PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1714759/238746547661793414511 : 3F3F27DAFEA4F5CC PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-01-16	Chang Chia-Tche	F-ECM	Factor: 238746547661793414511
2011-02-09	Carsten Kossendey	NF-PM1	B1=90000, B2=1507500, E=6
2011-01-29	Joss	NF-PM1	B1=50000
2010-10-16	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-24	Architects Cubed	NF	no factor from 2^60 to 2^61