2 157 427 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
3468524129711761317929	22	71.6	2020-04-30 14:43:55

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	180 / 640

Estimated T-Level: 26.4 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Lloyd	FFADA30BBA442D06	0
Verified (Factored)	1999-03-15	Louis Towles	FFADA30BBA442D06	384979
Verified (Factored)	2018-04-10	kkmrkkblmbrbk	FFADA30BBA442D06	290125

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-04-30	ATH	F6B9FCBCA70D1130	1	914503	5	3
Verified	2020-05-02	Luigi Morelli	F6B9FCBCA70D1130	1	2014524	5	3

History

Date	User	Type	Result
2020-05-02	Luigi Morelli	C-PRP	M2157427/3468524129711761317929 : F6B9FCBCA70D1130 PRP: Verified PRP without proof (not generated)
2020-04-30	ATH	C-PRP	M2157427/3468524129711761317929 : F6B9FCBCA70D1130 PRP: Verified PRP without proof (not generated)
2020-04-30	nordi	F-ECM	Factor: 3468524129711761317929 / (ECM curve 2, B1=50000, B2=5000000, Sigma=7022819087840164)
2019-09-29	mikr	NF-PM1	B1=5000000, B2=200000000, E=12
2019-05-13	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-10	kkmrkkblmbrbk	C-LL	FFADA30BBA442D06
2017-09-13	Joss	NF-PM1	B1=576000, B2=5760000, E=6
2017-09-05	Joss	NF-PM1	B1=480000, B2=4800000, E=6
2016-11-03	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-16	Joss	NF-PM1	B1=240000, B2=8842344, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-03	Joss	NF-PM1	B1=149750
2013-09-08	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-23	markr	NF-PM1	B1=120000, B2=2340000, E=6
2010-11-10	Joss	NF-PM1	B1=60000
2010-11-07	Joss	NF-PM1	B1=45000
2010-11-07	Joss	NF-PM1	B1=30000
2010-11-04	Joss	NF-PM1	B1=15000
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-05	Sturle Sunde	NF	no factor from 2^60 to 2^61

Username
Password