5 854 361 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
392673407036635700004369943549083329	36	118.2	2019-12-10 13:08:31

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1999-09-14	Douglas McPherson	44891CACD08898B7	4719140
Verified (Factored)	2001-04-08	Pat Lett	44891CACD08898B7	1833853

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-12-12	ANONYMOUS	3FD93E83189C7BC4	1	362006	5	3
Verified	2019-12-14	GAN	3FD93E83189C7BC4	1	1480080	5	3

P-1 factors

Date	Factor	B1	B2
2019-12-10	392673407036635700004369943549083329	720000	11520000

History

Date	User	Type	Result
2019-12-14	GAN	C-PRP	M5854361/392673407036635700004369943549083329 : 3FD93E83189C7BC4 PRP: Verified PRP without proof (not generated)
2019-12-12	ANONYMOUS	C-PRP	M5854361/392673407036635700004369943549083329 : 3FD93E83189C7BC4 PRP: Verified PRP without proof (not generated)
2019-12-10	storm5510	F-PM1	Factor: 392673407036635700004369943549083329 / (P-1, B1=720000, B2=11520000, e=12, n=324K)
2018-07-05	ramgeis	NF	no factor from 2^67 to 2^68
2016-07-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-09-15	snme2pm1	NF	no factor from 2^65 to 2^66
2014-10-15	lycorn	NF	no factor from 2^64 to 2^65
2014-10-09	Nesowa	NF	no factor from 2^63 to 2^64
2011-04-27	USAFSS	NF-PM1	B1=65000, B2=1088750, E=6
2009-03-21	GrunwalderGIMP	NF	no factor from 2^62 to 2^63