6 431 683 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
37930200779785098150695327	26	85.0	2014-10-06 02:18:10

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Willmore	D74ECFCAF510D8CC	0
Verified (Factored)	1999-05-23	Marc Getty / Phil Fizur	D74ECFCAF510D8CC	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-14	ATH	653608995D460E02	1	1925090	5	3
Verified	2018-07-04	kkmrkkblmbrbk	653608995D460E02	1	2613008	5	3

P-1 factors

Date	Factor	B1	B2
2014-10-06	37930200779785098150695327	395000	9875000

History

Date	User	Type	Result
2022-03-20	LordJulius	NF	no factor from 2^62 to 2^63
2018-07-04	kkmrkkblmbrbk	C-PRP	M6431683/37930200779785098150695327 : 653608995D460E02 PRP: Verified PRP without proof (not generated)
2017-12-14	ATH	C-PRP	M6431683/37930200779785098150695327 : 653608995D460E02 PRP: Verified PRP without proof (not generated)
2014-10-06	Nesowa	F-PM1	Factor: 37930200779785098150695327 / (P-1, B1=395000, B2=9875000, E=12)
2014-08-04	lycorn	NF	no factor from 2^64 to 2^65
2014-08-02	Nesowa	NF	no factor from 2^63 to 2^64