3 151 927 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
12170804798804137	17	53.4	old

ECM

Digits	B1	Curves
25	50000	98 / 280

Estimated T-Level: 21.8 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-31	Oliver Kruse	392EB81B5397F210	1	2036954	5	3
Verified	2017-12-12	kkmrkkblmbrbk	392EB81B5397F210	1	1311528	5	3

History

Date	User	Type	Result
2022-03-24	LordJulius	NF	no factor from 2^66 to 2^67
2022-03-24	LordJulius	NF	no factor from 2^65 to 2^66
2022-02-22	Joss	NF-PM1	B1=1000000, B2=128282700
2021-05-10	Joss	NF	no factor from 2^67 to 2^68
2021-01-12	Joss	NF	no factor from 2^64 to 2^65
2021-01-07	Joss	NF	no factor from 2^63 to 2^64
2021-01-06	Joss	NF	no factor from 2^62 to 2^63
2021-01-05	Joss	NF-PM1	B1=315192, B2=3151927, E=6
2021-01-05	Joss	NF-PM1	B1=315192
2021-01-04	Joss	NF	no factor from 2^61 to 2^62
2021-01-04	Joss	NF	no factor from 2^60 to 2^61
2017-12-12	kkmrkkblmbrbk	C-PRP	M3151927/12170804798804137 : 392EB81B5397F210 PRP: Verified PRP without proof (not generated)
2017-10-31	Oliver Kruse	C-PRP	M3151927/12170804798804137 : 392EB81B5397F210 PRP: Verified PRP without proof (not generated)