2 148 989 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
11717951723017130043791999	26	83.3	2020-07-15 22:53:28

ECM

Digits	B1	Curves
25	50000	99 / 280

Estimated T-Level: 21.8 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Kevin Jaget	526547CC798EAEA5	0
Verified (Factored)	2000-03-08	Alexander Grässer	526547CC798EAEA5	1332229
Verified (Factored)	2018-04-08	kkmrkkblmbrbk	526547CC798EAEA5	385539

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-16	M Miller	3B74C2823424512A	1	1704349	5	3
Verified	2020-07-16	oodaira	3B74C2823424512A	1	1066483	5	3

History

Date	User	Type	Result
2020-07-16	oodaira	C-PRP	M2148989/11717951723017130043791999 : 3B74C2823424512A PRP: Verified PRP without proof (not generated)
2020-07-16	M Miller	C-PRP	M2148989/11717951723017130043791999 : 3B74C2823424512A PRP: Verified PRP without proof (not generated)
2020-07-15	Chang Chia-Tche	F-ECM	Factor: 11717951723017130043791999 / (ECM curve 3, B1=50000, B2=5000000, Sigma=3949092332852190)
2019-04-08	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-08	kkmrkkblmbrbk	C-LL	526547CC798EAEA5
2017-11-30	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-11-17	Joss	NF-PM1	B1=648000, B2=10954906, E=12
2017-10-04	Joss	NF-PM1	B1=540000, B2=5400000, E=6
2016-10-29	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-29	Joss	NF-PM1	B1=270000, B2=9959006, 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
2015-03-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-07	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-22	James Heinrich	NF-PM1	B1=135000, B2=2666250, E=6
2011-01-13	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2010-11-03	Joss	NF-PM1	B1=20000
2009-01-07	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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