6 234 491 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
287831359132009723766012795757047	33	107.8	2021-10-30 01:26:15

ECM

Digits	B1	Curves
25	50000	6 / 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	3BEAEE3532527CD4	0
Verified (Factored)	1999-05-02	Mike Keeler	3BEAEE3532527CD4	374490

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-10-30	firejuggler	E6B7A01B86F374D2	1	3337041	5	3

P-1 factors

Date	Factor	B1	B2
2021-10-30	287831359132009723766012795757047	3000000	243000000

History

Date	User	Type	Result
2021-10-30	Steve Jacobson	CERT	PRP Certification Proof certified good
2021-10-30	firejuggler	C-PRP	M6234491/287831359132009723766012795757047 : E6B7A01B86F374D2 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-30	firejuggler	F-PM1	Factor: 287831359132009723766012795757047 / (P-1, B1=3000000, B2=243000000)
2021-09-21	SRBase	NF	no factor from 2^71 to 2^72
2021-08-18	SRBase	NF	no factor from 2^70 to 2^71
2020-07-19	takahashi	NF	no factor from 2^69 to 2^70
2020-04-05	takahashi	NF	no factor from 2^68 to 2^69
2019-10-07	takahashi	NF-PM1	B1=600000, B2=12000000, E=12
2018-06-01	ramgeis	NF	no factor from 2^67 to 2^68
2016-03-21	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-13	snme2pm1	NF	no factor from 2^65 to 2^66
2014-09-17	monst	NF	no factor from 2^64 to 2^65
2014-09-12	Nesowa	NF	no factor from 2^63 to 2^64
2013-04-21	Squeeky_Squirrel	NF-PM1	B1=115000, B2=2300000, E=6
2009-06-17	Carsten Kossendey	NF-PM1	B1=30000, B2=457500