2 572 699 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
2068334096501750188409	22	70.8	2020-10-04 08:53:40

ECM

Digits	B1	Curves
25	50000	71 / 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
Bad		Earl Malmrose	42022287C5E1BE43	0
Verified (Factored)	1999-05-02	Jorge Pinto	7EF10D60C7B667EB	339201
Verified (Factored)	2000-01-04	Gordon Bower	7EF10D60C7B667EB	2450972
Verified (Factored)	2018-06-17	kkmrkkblmbrbk	7EF10D60C7B667EB	302250

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-10-04	SRJ2877	5CCBE53055DA9740	1	2218064	5	3

History

Date	User	Type	Result
2020-10-04	M Miller	CERT	PRP Certification Proof certified good
2020-10-04	SRJ2877	C-PRP	M2572699/2068334096501750188409 : 5CCBE53055DA9740 PRP proof power = 7 PRP: Verified Proof certified good
2020-10-04	daveward2005	F-ECM	Factor: 2068334096501750188409 / (ECM curve 7, B1=50000, B2=5000000, Sigma=8485149200937454)
2019-09-03	Yxinity	NF	no factor from 2^67 to 2^68
2018-06-17	kkmrkkblmbrbk	C-LL	7EF10D60C7B667EB
2017-08-20	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-06-20	mikr	NF-PM1	B1=3200000, B2=112000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-08	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-19	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-04-17	James Heinrich	NF-PM1	B1=175000, B2=4112500, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61