2 263 069 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶²

Factored

Factor	Digits	Bits	Date
5938990079537186622079	22	72.3	2017-12-22 07:50:42

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	134 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Hgin normaalilyseo	76F32FCB256CD809	0	Windows,Prime95,v14,(aka WQ1)
Factored	1999-03-01	Michael Collier	76F32FCB256CD809	1989614	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-12-22	ATH	5A0D23954A6C243C	1	864696	5	3
Verified	PRP without proof (not generated)	2017-12-23	storm5510	5A0D23954A6C243C	1	496182	5	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=288000, B2=308189700
2017-12-23	storm5510	C-PRP	M2263069/5938990079537186622079 : 5A0D23954A6C243C
2017-12-22	ATH	C-PRP	M2263069/5938990079537186622079 : 5A0D23954A6C243C
2017-12-22	bam	F-ECM	Factor: 5938990079537186622079
2017-01-15	Gordon Spence	NF	no factor TF: 66-67
2016-03-29	Joss	NF-PM1	B1=342144, B2=3421440, E=6
2016-02-23	Mark Rose	NF	no factor TF: 1-60
2015-10-30	ramgeis	NF	no factor TF: 65-66
2015-03-10	VictordeHollander	NF	no factor TF: 64-65
2015-03-10	VictordeHollander	NF	no factor TF: 63-64
2014-09-02	Joss	NF-PM1	B1=128362
2013-12-06	Jerry Hallett	NF	no factor TF: 62-63
2012-05-05	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-01-04	markr	NF-PM1	B1=100000, B2=2100000, E=6
2010-11-12	Joss	NF-PM1	B1=30000
2010-11-07	Joss	NF-PM1	B1=15000
2009-01-11	Sturle Sunde	NF	no factor TF: 60-61
1999-03-01	-anonymous-	C-LL	76F32FCB256CD809