2 566 171 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
45468118586858753831407	23	75.3	2015-08-14 01:53:33

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Joe Decker	EC0DA46887781D3E	0
Verified (Factored)	1999-04-13	Glen Pritchard	EC0DA46887781D3E	1107877

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-15	Oliver Kruse	45C4CDC2191E8F43	1	2313026	5	3
Verified	2017-12-01	kkmrkkblmbrbk	45C4CDC2191E8F43	1	63566	5	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=360000, B2=340942140
2022-03-11	LordJulius	NF	no factor from 2^1 to 2^60
2017-12-01	kkmrkkblmbrbk	C-PRP	M2566171/45468118586858753831407 : 45C4CDC2191E8F43 PRP: Verified PRP without proof (not generated)
2017-10-15	Oliver Kruse	C-PRP	M2566171/45468118586858753831407 : 45C4CDC2191E8F43 PRP: Verified PRP without proof (not generated)
2015-08-14	guru	F-ECM	Factor: 45468118586858753831407 / (ECM curve 3, B1=50000, B2=5000000)
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-17	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-04-16	James Heinrich	NF-PM1	B1=175000, B2=4112500, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2011-01-03	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-29	Sturle Sunde	NF	no factor from 2^60 to 2^61