2 018 629 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
172902060883908125941586743	27	87.2	2017-11-13 08:03:35

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	113 / 640

Estimated T-Level: 25.9 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Brian Doherty	3F438FFE5A91D152	0
Verified (Factored)	1999-01-29	Ronnie van schaijk	3F438FFE5A91D152	463446
Verified (Factored)	2016-07-15	Mark Rose	3F438FFE5A91D152	1244618

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-13	kkmrkkblmbrbk	6DAA99CDA048E79C	1	1897645	5	3
Verified	2017-11-14	Oliver Kruse	6DAA99CDA048E79C	1	1289364	5	3

History

Date	User	Type	Result
2017-11-14	Oliver Kruse	C-PRP	M2018629/172902060883908125941586743 : 6DAA99CDA048E79C PRP: Verified PRP without proof (not generated)
2017-11-13	kkmrkkblmbrbk	C-PRP	M2018629/172902060883908125941586743 : 6DAA99CDA048E79C PRP: Verified PRP without proof (not generated)
2017-11-13	Sid & Andy	F-ECM	Factor: 172902060883908125941586743 / (ECM curve 42, B1=50000, B2=5000000)
2016-07-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-15	Mark Rose	C-LL	3F438FFE5A91D152
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-10-28	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-10-16	David Campeau	NF-PM1	B1=580000, B2=15080000, E=12
2013-02-11	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-04	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-07	Joss	NF-PM1	B1=201862
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61