3 085 139 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
425749183	9	28.7	old
308744515624547394569	21	68.1	2012-09-14 03:20:06

ECM

Digits	B1	Curves
25	50000	60 / 280

Estimated T-Level: 21.1 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-29	Oliver Kruse	C897D2FF2A82CE09	2	2192935	5	3
Verified	2017-12-11	kkmrkkblmbrbk	C897D2FF2A82CE09	2	1319889	5	3

History

Date	User	Type	Result
2022-01-23	Joss	NF-PM1	B1=1000000, B2=119912100
2021-06-20	Joss	NF	no factor from 2^67 to 2^68
2021-03-06	Joss	NF-PM1	B1=308513, B2=6478791, E=6
2021-03-05	Joss	NF-PM1	B1=308513, B2=3393652, E=6
2017-12-11	kkmrkkblmbrbk	C-PRP	M3085139/425749183/308744515624547394569 : C897D2FF2A82CE09 PRP: Verified PRP without proof (not generated)
2017-10-29	Oliver Kruse	C-PRP	M3085139/425749183/308744515624547394569 : C897D2FF2A82CE09 PRP: Verified PRP without proof (not generated)
2012-09-14	dbaugh	F	Factor: 308744515624547394569