2 197 633 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
13068607249068466117543	23	73.5	2013-05-23 19:22:31

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	204 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael Bertrand	48EB4F0E065843DA	0
Verified (Factored)	1999-02-07	Kent Lee	48EB4F0E065843DA	1975073

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-10	Oliver Kruse	1C51EBF67EF30587	1	0	1	3
Verified	2017-11-20	kkmrkkblmbrbk	1C51EBF67EF30587	1	272372	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-20	kkmrkkblmbrbk	C-PRP	M2197633/13068607249068466117543 : 1C51EBF67EF30587 PRP: Verified PRP without proof (not generated)
2017-10-10	Oliver Kruse	C-PRP	M2197633/13068607249068466117543 : 1C51EBF67EF30587 PRP: Verified PRP without proof (not generated)
2016-03-31	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-05-23	jim f in mn	F-ECM	Factor: 13068607249068466117543
2011-01-10	markr	NF-PM1	B1=90000, B2=1620000, E=6
2010-11-09	Joss	NF-PM1	B1=30000
2010-11-05	Joss	NF-PM1	B1=15000
2009-01-10	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61