1 740 169 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
893929376682724985047	21	69.6	2014-12-03 02:27:38

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)		Mike Coleman	0876DE60241629C6	0
Verified (Factored)	1999-02-07	David Phillips	0876DE60241629C6	742693

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	AB31ED066391D9C8	1	0	1	3
Verified	2017-11-03	ATH	AB31ED066391D9C8	1	545361	1	3

History

Date	User	Type	Result
2017-11-03	ATH	C-PRP	M1740169/893929376682724985047 : AB31ED066391D9C8 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1740169/893929376682724985047 : AB31ED066391D9C8 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-12-03	Chang Chia-Tche	F-ECM	Factor: 893929376682724985047 / (ECM curve 1, B1=50000, B2=5000000)
2014-12-02	Joss	NF-PM1	B1=210652
2014-09-11	Joss	NF-PM1	B1=173768
2014-05-06	Joss	NF-PM1	B1=136884
2014-04-05	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1543750, E=6
2010-11-18	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-18	Architects Cubed	NF	no factor from 2^60 to 2^61