1 694 051 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
247890187346011514807	21	67.7	2014-09-04 04:50:35

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)		Claude Barbe	F7FFE7AC8A2D359A	0
Verified (Factored)	1998-11-28	Kent Lee	F7FFE7AC8A2D359A	452548

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	FCD03C3D3F2AA91D	1	0	1	3
Verified	2017-11-03	kkmrkkblmbrbk	FCD03C3D3F2AA91D	1	779611	1	3

History

Date	User	Type	Result
2017-11-03	kkmrkkblmbrbk	C-PRP	M1694051/247890187346011514807 : FCD03C3D3F2AA91D PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1694051/247890187346011514807 : FCD03C3D3F2AA91D PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-09-04	Chang Chia-Tche	F-ECM	Factor: 247890187346011514807 / (ECM curve 2, B1=50000, B2=5000000)
2014-04-29	Joss	NF-PM1	B1=150000
2014-03-31	Joss	NF-PM1	B1=100000
2011-02-12	Carsten Kossendey	NF-PM1	B1=90000, B2=1485000, E=6
2011-01-26	Joss	NF-PM1	B1=50000
2010-09-26	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-25	Architects Cubed	NF	no factor from 2^60 to 2^61