2 168 407 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
5440737610772834888912753	25	82.2	2017-10-25 06:49:11

ECM

Digits	B1	Curves
25	50000	98 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gary Vedvik	DFC27B0EC3FE7649	0
Verified (Factored)	1999-02-21	Jim Valenti	DFC27B0EC3FE7649	2010670

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-25	Oliver Kruse	4AE4769CB7734D1A	1	884378	5	3
Verified	2017-11-19	kkmrkkblmbrbk	4AE4769CB7734D1A	1	1472801	5	3

History

Date	User	Type	Result
2017-11-19	kkmrkkblmbrbk	C-PRP	M2168407/5440737610772834888912753 : 4AE4769CB7734D1A PRP: Verified PRP without proof (not generated)
2017-10-25	Oliver Kruse	C-PRP	M2168407/5440737610772834888912753 : 4AE4769CB7734D1A PRP: Verified PRP without proof (not generated)
2017-10-25	Conductor	F-ECM	Factor: 5440737610772834888912753 / (ECM curve 2, B1=50000, B2=5000000)
2016-11-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-12-17	HBendtz	NF-PM1	B1=700000, B2=21000000, e=12
2015-03-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-02	Joss	NF-PM1	B1=134600
2013-09-08	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-21	markr	NF-PM1	B1=105000, B2=2047500, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-11-03	Joss	NF-PM1	B1=20000
2009-01-08	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-05	Sturle Sunde	NF	no factor from 2^60 to 2^61