2 530 267 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
70165017189171406993753	23	75.9	2015-08-03 11:26:22

ECM

Digits	B1	Curves
25	50000	187 / 280

Estimated T-Level: 23.3 ⓘ

TF below 2^73 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		john rheinstein	238FD4266FAD72BD	0
Verified (Factored)	1999-04-02	Alastair Knox	238FD4266FAD72BD	1797027

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-15	kkmrkkblmbrbk	68A4CA1CA774465E	1	700631	5	3
Verified	2017-11-09	Oliver Kruse	68A4CA1CA774465E	1	1764876	5	3

History

Date	User	Type	Result
2022-03-11	LordJulius	NF	no factor from 2^1 to 2^60
2021-09-20	Dylan Delgado	NF-PM1	B1=3000000, B2=273000000
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-09	Oliver Kruse	C-PRP	M2530267/70165017189171406993753 : 68A4CA1CA774465E PRP: Verified PRP without proof (not generated)
2017-10-15	kkmrkkblmbrbk	C-PRP	M2530267/70165017189171406993753 : 68A4CA1CA774465E PRP: Verified PRP without proof (not generated)
2015-08-03	guru	F-ECM	Factor: 70165017189171406993753 / (ECM curve 2, 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
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-14	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-03-19	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-06	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61