2 673 677 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
4581237510520018909207	22	72.0	2021-03-07 22:56:40

ECM

Digits	B1	Curves
25	50000	89 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Bruce Hebden	D32CFAE8760AD6E3	0
Verified (Factored)	1999-07-04	Roland Brousseau	D32CFAE8760AD6E3	732709
Verified (Factored)	2018-07-24	kkmrkkblmbrbk	D32CFAE8760AD6E3	2157137

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-09	Massimo Cappelli (ik5pwa)	AD92D83FC0294E88	1	2397892	5	3
Verified	2021-03-09	Oliver Kruse	AD92D83FC0294E88	1	1703262	5	3

History

Date	User	Type	Result
2021-03-09	jkoster	CERT	PRP Certification Proof certified good
2021-03-09	Oliver Kruse	C-PRP	M2673677/4581237510520018909207 : AD92D83FC0294E88 PRP proof power = 7 PRP: Verified Proof certified good
2021-03-09	Massimo Cappelli (ik5pwa)	C-PRP	M2673677/4581237510520018909207 : AD92D83FC0294E88 PRP: Verified PRP without proof (not generated)
2021-03-07	mnd9	F-ECM	Factor: 4581237510520018909207 / (ECM curve 2, B1=50000, B2=5000000, Sigma=8216680990725816)
2019-11-19	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-24	kkmrkkblmbrbk	C-LL	D32CFAE8760AD6E3
2018-04-09	Joss	NF-PM1	B1=2673677, B2=5234266, E=6
2017-09-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-08-01	Joss	NF-PM1	B1=1747133, B2=3494266, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-07	Joss	NF-PM1	B1=1747133
2015-06-25	Joss	NF-PM1	B1=1588303
2015-06-08	Joss	NF-PM1	B1=1443912
2015-05-26	Joss	NF-PM1	B1=1312648
2015-05-22	Joss	NF-PM1	B1=1193317
2015-05-07	Joss	NF-PM1	B1=1084834
2015-05-01	Joss	NF-PM1	B1=986213
2015-04-08	Joss	NF-PM1	B1=815053
2015-03-17	Joss	NF-PM1	B1=673599
2015-03-14	Joss	NF-PM1	B1=612363
2015-03-12	Joss	NF-PM1	B1=556694
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
2015-02-16	Joss	NF-PM1	B1=460079
2015-02-15	Joss	NF-PM1	B1=418254
2015-02-11	Joss	NF-PM1	B1=380231
2015-02-03	Joss	NF-PM1	B1=214632
2015-02-01	Joss	NF-PM1	B1=195120
2015-01-30	Joss	NF-PM1	B1=177382
2015-01-29	Joss	NF-PM1	B1=161257
2014-11-25	Joss	NF-PM1	B1=129006
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-19	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-12-08	markr	NF-PM1	B1=105000, B2=2283750, E=6
2010-11-19	Joss	NF-PM1	B1=20000
2009-01-26	Sturle Sunde	NF	no factor from 2^60 to 2^61

Username
Password