2 442 941 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
10617229761994170239	20	63.2	2014-01-20 19:48:37

ECM

Digits	B1	Curves
25	50000	94 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Marc Honey	467784E1FF6DCB31	0
Verified (Factored)	1999-04-02	Ian R Lowman	467784E1FF6DCB31	485666

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-15	kkmrkkblmbrbk	8FE760F54BEC2A2A	1	1007724	5	3
Verified	2017-11-04	Oliver Kruse	8FE760F54BEC2A2A	1	284007	5	3

P-1 factors

Date	Factor	B1	B2
2014-01-20	10617229761994170239	1172000	48000000

History

Date	User	Type	Result
2022-03-10	LordJulius	NF	no factor from 2^1 to 2^60
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-04	Oliver Kruse	C-PRP	M2442941/10617229761994170239 : 8FE760F54BEC2A2A PRP: Verified PRP without proof (not generated)
2017-10-15	kkmrkkblmbrbk	C-PRP	M2442941/10617229761994170239 : 8FE760F54BEC2A2A PRP: Verified PRP without proof (not generated)
2014-01-20	mikr	F-PM1	Factor: 10617229761994170239
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-06	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-18	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61