2 188 481 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2949136590706877760915353	25	81.3	2021-11-29 04:17:54

ECM

Digits	B1	Curves
25	50000	187 / 280

Estimated T-Level: 23.3 ⓘ

TF below 2^73 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1997-12-30	Fumitaka Hayashi	5D8FEB2533E52A92	0
Verified (Factored)	1999-07-12	MSR Cambridge	5D8FEB2533E52A92	65095
Verified (Factored)	2018-04-14	kkmrkkblmbrbk	5D8FEB2533E52A92	516127

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-11-30	Tucker Kao	90A560B6D39D76AB	1	479256	5	3

History

Date	User	Type	Result
2021-11-30	ed_graham123123123	CERT	PRP Certification Proof certified good
2021-11-30	Tucker Kao	C-PRP	M2188481/2949136590706877760915353 : 90A560B6D39D76AB PRP proof power = 7 PRP: Verified Proof certified good
2021-11-29	daveward2005	F-ECM	Factor: 2949136590706877760915353 / (ECM curve 5, B1=50000, B2=5000000, Sigma=5157644745846970)
2021-07-15	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-15	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-14	kkmrkkblmbrbk	C-LL	5D8FEB2533E52A92
2018-02-23	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2016-11-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-13	Joss	NF-PM1	B1=442455, B2=4424550, E=6
2016-01-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-10	Joss	NF-PM1	B1=148656
2014-06-26	-Anonymous-	NF-PM1	B1=119328
2013-12-03	LaurV	NF	no factor from 2^62 to 2^63
2011-01-12	markr	NF-PM1	B1=90000, B2=1620000, E=6
2010-11-08	Joss	NF-PM1	B1=30000
2010-11-04	Joss	NF-PM1	B1=15000
2009-01-08	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61

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