2 090 441 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
4374446478977598181490855431	28	91.8	2018-05-28 01:52:51

ECM

Digits	B1	Curves
25	50000	106 / 280

Estimated T-Level: 21.9 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Jens J Loesel	9FF67241DA6D22BE	0
Verified (Factored)	1999-01-29	Joerg Picard	9FF67241DA6D22BE	1478878
Verified (Factored)	2017-06-11	kkmrkkblmbrbk	9FF67241DA6D22BE	1742964

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-02	Oliver Kruse	5B7E8E6FBD381146	1	1612116	5	3
Verified	2018-06-03	kracker	5B7E8E6FBD381146	1	1914914	5	3

History

Date	User	Type	Result
2018-06-03	kracker	C-PRP	M2090441/4374446478977598181490855431 : 5B7E8E6FBD381146 PRP: Verified PRP without proof (not generated)
2018-06-02	Oliver Kruse	C-PRP	M2090441/4374446478977598181490855431 : 5B7E8E6FBD381146 PRP: Verified PRP without proof (not generated)
2018-05-28	bam	F-ECM	Factor: 4374446478977598181490855431 / (ECM curve 1, B1=50000, B2=5000000)
2017-06-11	kkmrkkblmbrbk	C-LL	9FF67241DA6D22BE
2017-05-07	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2016-11-08	Joss	NF-PM1	B1=268329
2016-11-04	Joss	NF-PM1	B1=223608
2016-09-21	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-24	Joss	NF-PM1	B1=186340, B2=6300000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-06	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-03	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-20	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-18	James Heinrich	NF-PM1	B1=140000, B2=3150000, E=6
2011-01-08	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2009-07-27	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61

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