3 238 727 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
239609627459221634463169	24	77.7	2021-08-04 05:39:33

ECM

Digits	B1	Curves
25	50000	54 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-24	Lutz Nebe	20085575D4EE2434	0
Verified (Factored)	1999-06-15	Mason Guy	20085575D4EE2434	3104667

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-08-04	SRJ2877	A673218EC8053E68	1	1326546	5	3

History

Date	User	Type	Result
2022-09-11	Joss	NF-PM1	B1=1000000, B2=241175550
2022-03-12	Joss	NF-PM1	B1=1000000, B2=134343300
2021-08-04	Section 31	CERT	PRP Certification Proof certified good
2021-08-04	SRJ2877	C-PRP	M3238727/239609627459221634463169 : A673218EC8053E68 PRP proof power = 7 PRP: Verified Proof certified good
2021-08-04	Sergey Nosov	F-ECM	Factor: 239609627459221634463169 / (ECM curve 1, B1=50000, B2=5000000)
2021-02-02	ViliamF	NF	no factor from 2^68 to 2^69
2020-05-22	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2018-11-19	TJAOI	NF	no factor from 2^67 to 2^68
2018-08-09	Joss	NF-PM1	B1=410000, B2=4100000
2018-08-08	Joss	NF-PM1	B1=410000, B2=3690000
2018-08-08	Joss	NF-PM1	B1=410000, B2=3280000
2018-08-08	Joss	NF-PM1	B1=410000, B2=2870000
2018-08-07	Joss	NF-PM1	B1=410000, B2=2460000
2018-08-06	Joss	NF-PM1	B1=410000, B2=2050000
2017-03-25	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-11-21	Squeeky_Squirrel	NF-PM1	B1=205000, B2=5842500, E=12
2015-06-24	Tha	NF	no factor from 2^65 to 2^66
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-04	Squeeky_Squirrel	NF-PM1	B1=115000, B2=2587500, E=6
2012-12-30	dbaugh	NF	no factor from 2^62 to 2^63
2011-09-08	USAFSS	NF-PM1	B1=55000, B2=866250, E=6
2011-07-25	Carsten Kossendey	NF	no factor from 2^61 to 2^62
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-04	S485122	NF	no factor from 2^60 to 2^61

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