2 445 979 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
916433522948293730071	21	69.6	2015-07-08 03:32:58

ECM

Digits	B1	Curves
25	50000	65 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Zyg Furmaniuk	2A49FDA8B5DB521F	0
Verified (Factored)	1999-03-26	Phillip L. Poplin	2A49FDA8B5DB521F	1430981

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-13	Oliver Kruse	ECA35CDF8373120E	1	1929560	5	3
Verified	2017-11-28	kkmrkkblmbrbk	ECA35CDF8373120E	1	57060	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-28	kkmrkkblmbrbk	C-PRP	M2445979/916433522948293730071 : ECA35CDF8373120E PRP: Verified PRP without proof (not generated)
2017-10-13	Oliver Kruse	C-PRP	M2445979/916433522948293730071 : ECA35CDF8373120E PRP: Verified PRP without proof (not generated)
2015-07-08	guru	F-ECM	Factor: 916433522948293730071 / (ECM curve 3, B1=50000, B2=5000000)
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-01-24	mikr	NF-PM1	B1=1172000, B2=48000000, E=12
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-04	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-18	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-19	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61