2 207 441 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
211914337	9	27.7	old
325862722477981217	18	58.2	2015-08-14 11:49:31
4456310665879544089	19	62.0	2016-04-14 11:20:05

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	164 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-09	Oliver Kruse	4954AF5FAFC4068E	1	0	1	3
Verified	2017-12-05	ATH	6550ADD498325C9C	3	2005590	5	3
Verified	2017-12-05	kkmrkkblmbrbk	6550ADD498325C9C	3	1108477	5	3

P-1 factors

Date	Factor	B1	B2
2016-04-14	4456310665879544089	500000	15000000

History

Date	User	Type	Result
2017-12-05	kkmrkkblmbrbk	C-PRP	M2207441/211914337/325862722477981217/4456310665879544089 : 6550ADD498325C9C PRP: Verified PRP without proof (not generated)
2017-12-05	ATH	C-PRP	M2207441/211914337/325862722477981217/4456310665879544089 : 6550ADD498325C9C PRP: Verified PRP without proof (not generated)
2017-10-18	Oliver Kruse	C-PRP	M2207441/211914337/325862722477981217/4456310665879544089/4456310665879544089 : 6550ADD498325C9C PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2207441/211914337/325862722477981217/4456310665879544089/4456310665879544089 : 4954AF5FAFC4068E PRP: Verified PRP without proof (not generated)
2016-04-14	alpertron	F-PM1	Factor: 4456310665879544089 / (P-1, B1=500000, B2=15000000, E=12)
2015-08-14	TJAOI	F	Factor: 325862722477981217 / TF: 58-59