2 305 109 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
206150837721499108742753	24	77.4	2020-07-03 04:02:23

ECM

Digits	B1	Curves
25	50000	72 / 280

Estimated T-Level: 21.3 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		John Luciani	ED1484C1578A81E8	0
Verified (Factored)	1999-10-07	Gintautas Miliauskas	ED1484C1578A81E8	1802510
Verified (Factored)	2018-05-01	kkmrkkblmbrbk	ED1484C1578A81E8	623299

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-03	M Miller	F94C30750E696251	1	1192463	5	3
Verified	2020-07-04	marssystems	F94C30750E696251	1	1407834	5	3

History

Date	User	Type	Result
2020-07-04	marssystems	C-PRP	M2305109/206150837721499108742753 : F94C30750E696251 PRP: Verified PRP without proof (not generated)
2020-07-03	M Miller	C-PRP	M2305109/206150837721499108742753 : F94C30750E696251 PRP: Verified PRP without proof (not generated)
2020-07-03	GAN	F-ECM	Factor: 206150837721499108742753 / (ECM curve 3, B1=50000, B2=5000000, Sigma=6332726021426957)
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-01	kkmrkkblmbrbk	C-LL	ED1484C1578A81E8
2018-02-19	Sid & Andy	NF-PM1	B1=6000000, B2=180000000, E=12
2017-05-30	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
2015-10-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-12	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-02-12	Bud	NF-PM1	B1=500000, B2=10000000, E=12
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61