7 926 463 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
90058244355500228321	20	66.3	2016-08-16 07:28:10

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)	1999-12-23	Low Hwee Boon	6CBCE055030CDF95	0
Verified (Factored)	2002-06-02	Ars Technica Team Prime Rib	6CBCE055030CDF95	1476347

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-14	_p95holder_	208338CDCABA8AB6	1	1915446	5	3
Verified	2019-11-25	Chang Chia-Tche	208338CDCABA8AB6	1	2273503	5	3

History

Date	User	Type	Result
2019-11-25	Chang Chia-Tche	C-PRP	M7926463/90058244355500228321 : 208338CDCABA8AB6 PRP: Verified PRP without proof (not generated)
2018-06-14	_p95holder_	C-PRP	M7926463/90058244355500228321 : 208338CDCABA8AB6 PRP: Verified PRP without proof (not generated)
2016-08-16	Gordon Spence	F	Factor: 90058244355500228321 / TF: 66-67
2015-06-03	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-01-07	David Campeau	NF	no factor from 2^64 to 2^65
2013-10-01	Nesowa	NF	no factor from 2^63 to 2^64
2012-10-16	Nesowa	NF-PM1	B1=100000, B2=1925000, E=6