3 261 703 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
263745191473034372317369	24	77.8	2021-01-26 01:59:51

ECM

Digits	B1	Curves
25	50000	44 / 280

Estimated T-Level: 20.8 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Thomas Honold	133A2D5D0A8C7205	0
Verified (Factored)	1999-06-15	Jeremy Hoff	133A2D5D0A8C7205	2703030

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-01-26	ViliamF	30911A35D774B38B	1	1020638	5	3

History

Date	User	Type	Result
2022-09-12	Joss	NF-PM1	B1=1000000, B2=241152450
2022-04-02	Joss	NF-PM1	B1=1000000, B2=134316000
2021-01-29	axn	NF-PM1	B1=10000000, B2=400000000
2021-01-26	Ben Delo	CERT	PRP Certification Proof certified good
2021-01-26	ViliamF	C-PRP	M3261703/263745191473034372317369 : 30911A35D774B38B PRP proof power = 7 PRP: Verified Proof certified good
2021-01-26	axn	F-ECM	Factor: 263745191473034372317369 / (ECM curve 5, B1=80000, B2=11280000, Sigma=7488705895279020)
2020-09-29	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-04	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-01-20	Joss	NF-PM1	B1=415800, B2=4158000, E=6
2015-06-28	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
2014-10-07	Joss	NF-PM1	B1=99356
2014-06-13	Joss	NF-PM1	B1=79678
2012-12-30	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-03	markr	NF	no factor to 2^62
2011-09-15	USAFSS	NF-PM1	B1=60000, B2=1050000, E=6
2009-07-06	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-03	S485122	NF	no factor from 2^60 to 2^61

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