3 689 843 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
15428428447233792781133605301749397033	38	123.5	2020-11-21 13:55:21

ECM

Digits	B1	Curves
25	50000	12 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-10-11	MSR Cambridge	535858D9A1B6C88C	0
Verified (Factored)	1999-11-10	Craig Haynal	535858D9A1B6C88C	2761545

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-11-21	mrh	849FB23D8B3B9078	1	1740346	5	3

P-1 factors

Date	Factor	B1	B2
2020-11-21	15428428447233792781133605301749397033	30000000	600000000

History

Date	User	Type	Result
2022-07-17	Joss	NF-PM1	B1=3689843, B2=3724361550
2022-01-21	Joss	NF-PM1	B1=1000000, B2=134869350
2020-11-21	Flash	CERT	PRP Certification Proof certified good
2020-11-21	mrh	C-PRP	M3689843/15428428447233792781133605301749397033 : 849FB23D8B3B9078 PRP proof power = 7 PRP: Verified Proof certified good
2020-11-21	axn	F-PM1	Factor: 15428428447233792781133605301749397033 / (P-1, B1=30000000, B2=600000000, E=12)
2020-10-29	axn	NF	no factor from 2^69 to 2^70
2020-10-29	axn	NF	no factor from 2^68 to 2^69
2018-07-30	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-08	Joss	NF-PM1	B1=3689843, B2=14759372, E=12
2018-03-29	Joss	NF-PM1	B1=3689843, B2=7379686, E=6
2018-03-27	Joss	NF-PM1	B1=3689843
2018-02-12	Joss	NF-PM1	B1=2765228
2017-02-08	Joss	NF-PM1	B1=223948, B2=2239480, E=6
2017-02-04	Joss	NF-PM1	B1=186624
2017-01-19	Joss	NF-PM1	B1=155520
2017-01-05	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-12-29	Joss	NF-PM1	B1=129600
2016-12-26	Joss	NF-PM1	B1=108000
2016-07-08	Joss	NF-PM1	B1=90000, B2=3330000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-20	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2012-03-23	Squeeky_Squirrel	NF-PM1	B1=90000, B2=1665000, E=6
2011-05-20	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-13	Carsten Kossendey	NF-PM1	B1=20000, B2=260000
2009-03-08	S485122	NF	no factor from 2^60 to 2^61

Username
Password