2 471 633 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 2⁶³

Factored

Factor	Digits	Bits	Date
116815495241234500367	21	66.7	2016-06-20 21:42:01

ECM

Digits	B1	Curves
25	50000	268 / 280

Estimated T-Level: 24.8 ⓘ

TF below 2^77 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Simon Burge	8A8D48C3D99AACB2	0	Crandall,(aka X)
Factored	1999-05-30	Choi Woo Jin	8A8D48C3D99AACB2	1509397	Windows,Prime95,v18,(aka WU1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-14	Oliver Kruse	CB39D6ED0671051C	1	1401080	5	3
Verified	PRP without proof (not generated)	2017-11-29	storm5510	CB39D6ED0671051C	1	2224256	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-29	storm5510	C-PRP	M2471633/116815495241234500367 : CB39D6ED0671051C
2017-10-14	Oliver Kruse	C-PRP	M2471633/116815495241234500367 : CB39D6ED0671051C
2016-06-20	Jason U	F-ECM	Factor: 116815495241234500367
2016-02-23	Mark Rose	NF	no factor TF: 59-60
2015-10-27	ramgeis	NF	no factor TF: 65-66
2015-03-03	VictordeHollander	NF	no factor TF: 64-65
2015-03-03	VictordeHollander	NF	no factor TF: 63-64
2013-10-24	David Campeau	NF-PM1	B1=590000, B2=15930000, E=12
2013-02-21	dbaugh	NF	no factor TF: 62-63
2012-08-05	Grant McCracken	NF	no factor TF: 61-62
2010-12-04	Joss	NF-PM1	B1=247163
2010-11-19	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	Team Prime Rib	NF-PM1	B1=15000, B2=228750
2003-10-14	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-05-30	Choi4KANG	C-LL	8A8D48C3D99AACB2
1999-05-02	Choi4KANG	NF	no factor TF: 1-59