2 349 973 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
283178837463571318356047	24	77.9	2020-07-30 14:30:32

ECM

Digits	B1	Curves
25	50000	78 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Mickelson	06FFC4A56548F760	0
Verified (Factored)	1999-07-04	Francesco Bosia	06FFC4A56548F760	1208191
Verified (Factored)	2018-05-09	kkmrkkblmbrbk	06FFC4A56548F760	2348227

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-31	mnd9	EFA37E2174D819D2	1	1630167	5	3
Verified	2020-07-31	marssystems	EFA37E2174D819D2	1	582293	5	3

History

Date	User	Type	Result
2020-07-31	marssystems	C-PRP	M2349973/283178837463571318356047 : EFA37E2174D819D2 PRP: Verified PRP without proof (not generated)
2020-07-31	mnd9	C-PRP	M2349973/283178837463571318356047 : EFA37E2174D819D2 PRP: Verified PRP without proof (not generated)
2020-07-30	mnd9	F-ECM	Factor: 283178837463571318356047 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2533763505865946)
2019-03-04	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-09	kkmrkkblmbrbk	C-LL	06FFC4A56548F760
2018-02-13	Sid & Andy	NF-PM1	B1=6000000, B2=180000000, E=12
2017-06-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-10-27	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-06	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-06	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-05-29	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-03-05	Bud	NF-PM1	B1=500000, B2=10000000, E=12
2009-01-17	Sturle Sunde	NF	no factor from 2^60 to 2^61