1 233 709 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
699914176996038857447523120648402454952401	42	139.0	2023-01-18 10:52:29

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gary Hanson	01974EA6189BC0E0	0
Verified (Factored)		Cornelius Caesar	01974EA6189BC0E0	0
Verified (Factored)		apimac	01974EA6189BC0E0	0
Verified (Factored)	2015-11-12	MadPoo	01974EA6189BC0E0	239519

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-01-18	JackBlock	150D75639288826A	1	968100	5	3

P-1 factors

Date	Factor	B1	B2
2023-01-18	699914176996038857447523120648402454952401	200000000	2000300838690

History

Date	User	Type	Result
2023-01-18	Simon Josefsson	CERT	PRP Certification Proof certified good
2023-01-18	JackBlock	C-PRP	M1233709/699914176996038857447523120648402454952401 : 150D75639288826A PRP proof power = 6 PRP: Verified Proof certified good
2023-01-18	kracker	F-PM1	Factor: 699914176996038857447523120648402454952401 / (P-1, B1=200000000, B2=2000300838690)
2022-05-29	Sid & Andy	NF-PM1	B1=25000000, B2=128252050290
2020-10-24	kracker	NF	no factor from 2^70 to 2^71
2020-10-20	kracker	NF	no factor from 2^69 to 2^70
2020-10-20	kracker	NF	no factor from 2^68 to 2^69
2018-10-13	Joss	NF-PM1	B1=1233709, B2=135707990, E=12
2018-07-17	ramgeis	NF	no factor from 2^67 to 2^68
2018-07-17	ramgeis	NF	no factor from 2^66 to 2^67
2018-05-01	Joss	NF-PM1	B1=1233709, B2=123370900, E=12
2016-08-27	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-08-03	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-12	MadPoo	C-LL	01974EA6189BC0E0
2015-09-20	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-06	monst	NF	no factor from 2^64 to 2^65
2015-04-02	omylist	NF	no factor from 2^63 to 2^64
2013-10-25	David Campeau	NF-PM1	B1=1325000, B2=33125000, E=12
2012-10-26	dbaugh	NF	no factor from 2^62 to 2^63
2012-09-14	Axelsson	NF	no factor from 2^61 to 2^62
2009-02-17	Sturle Sunde	NF	no factor from 2^60 to 2^61

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