2 016 967 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
2147244562392658380671	22	70.9	2017-12-12 06:12:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	118 / 640

Estimated T-Level: 25.9 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Wart	54907FF3E1737E7B	0
Verified (Factored)	1999-01-17	King Butler	54907FF3E1737E7B	1613788
Verified (Factored)	2016-07-15	Mark Rose	54907FF3E1737E7B	1401200

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-16	Oliver Kruse	7F6530D4C7C6A00D	1	1235123	5	3
Verified	2017-12-16	kkmrkkblmbrbk	7F6530D4C7C6A00D	1	143525	5	3
Verified	2017-12-25	Yaroslav Berezhko	7F6530D4C7C6A00D	1	1450247	5	3

History

Date	User	Type	Result
2017-12-25	Yaroslav Berezhko	C-PRP	M2016967/2147244562392658380671 : 7F6530D4C7C6A00D PRP: Verified PRP without proof (not generated)
2017-12-16	kkmrkkblmbrbk	C-PRP	M2016967/2147244562392658380671 : 7F6530D4C7C6A00D PRP: Verified PRP without proof (not generated)
2017-12-16	Oliver Kruse	C-PRP	M2016967/2147244562392658380671 : 7F6530D4C7C6A00D PRP: Verified PRP without proof (not generated)
2017-12-12	Sid & Andy	F-ECM	Factor: 2147244562392658380671 / (ECM curve 22, B1=50000, B2=5000000)
2016-07-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-15	Mark Rose	C-LL	54907FF3E1737E7B
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-10-28	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-10-16	David Campeau	NF-PM1	B1=640000, B2=14080000, E=12
2013-06-06	David Campeau	NF	no factor from 2^62 to 2^63
2012-02-03	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-07	Joss	NF-PM1	B1=201696
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61