3 867 763 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
1871325260935265337809	22	70.7	2017-10-10 06:43:34

ECM

Digits	B1	Curves
25	50000	11 / 280

Estimated T-Level: 20.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1998-10-11	Terry S. Arnold	6C158525D82EBADD	0
Verified (Factored)	2000-03-27	Kevin Quiggle	6C158525D82EBADD	2349817

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-11	kkmrkkblmbrbk	D8A132F8A9178DD1	1	393977	5	3
Verified	2017-12-24	BloodERazor	D8A132F8A9178DD1	1	1561665	5	3
Verified	2017-12-25	Yaroslav Berezhko	D8A132F8A9178DD1	1	919311	5	3

History

Date	User	Type	Result
2022-05-25	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-02	Joss	NF-PM1	B1=90000
2017-12-25	Yaroslav Berezhko	C-PRP	M3867763/1871325260935265337809 : D8A132F8A9178DD1 PRP: Verified PRP without proof (not generated)
2017-12-24	BloodERazor	C-PRP	M3867763/1871325260935265337809 : D8A132F8A9178DD1 PRP: Verified PRP without proof (not generated)
2017-10-11	kkmrkkblmbrbk	C-PRP	M3867763/1871325260935265337809 : D8A132F8A9178DD1 PRP: Verified PRP without proof (not generated)
2017-10-10	Conductor	F-ECM	Factor: 1871325260935265337809 / (ECM curve 2, B1=50000, B2=5000000)
2016-11-25	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-29	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-28	Joss	NF-PM1	B1=229996, B2=2299960, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-01-14	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-14	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-26	Joss	NF-PM1	B1=86595
2012-02-29	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-19	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1137500, E=6
2011-02-17	markr	NF	no factor from 2^61 to 2^62
2009-07-29	Carsten Kossendey	NF-PM1	B1=20000, B2=275000
2009-02-26	S485122	NF	no factor from 2^60 to 2^61