2 158 727 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
434021380836198786760726568921	30	98.5	2019-10-04 03:13:36

ECM

Digits	B1	Curves
25	50000	118 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Groves	4904DC1417CFB753	0
Verified (Factored)	1999-10-07	Marco Del Pin	4904DC1417CFB753	1007956
Verified (Factored)	2018-04-10	kkmrkkblmbrbk	4904DC1417CFB753	2107764

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-05	mnd9	99A743D3D8784438	1	707708	5	3
Verified	2019-10-05	Daniil Tsarkov	99A743D3D8784438	1	886796	5	3
Verified	2019-10-08	GAN	99A743D3D8784438	1	1506135	5	3

P-1 factors

Date	Factor	B1	B2
2019-10-04	434021380836198786760726568921	5000000	0

History

Date	User	Type	Result
2022-08-25	USAFSS	NF-PM1	B1=600000, B2=602382690
2019-10-08	GAN	C-PRP	M2158727/434021380836198786760726568921 : 99A743D3D8784438 PRP: Verified PRP without proof (not generated)
2019-10-05	Daniil Tsarkov	C-PRP	M2158727/434021380836198786760726568921 : 99A743D3D8784438 PRP: Verified PRP without proof (not generated)
2019-10-05	mnd9	C-PRP	M2158727/434021380836198786760726568921 : 99A743D3D8784438 PRP: Verified PRP without proof (not generated)
2019-10-04	mikr	F-PM1	Factor: 434021380836198786760726568921 / (P-1, B1=5000000)
2019-05-13	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-10	kkmrkkblmbrbk	C-LL	4904DC1417CFB753
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
2016-04-17	Joss	NF-PM1	B1=240000, B2=8840784, 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=149732
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2011-01-23	markr	NF-PM1	B1=120000, B2=2340000, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2010-11-07	Joss	NF-PM1	B1=45000
2010-11-07	Joss	NF-PM1	B1=30000
2010-11-04	Joss	NF-PM1	B1=15000
2009-01-06	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61

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