2 227 739 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷²

TF target 2⁶²

TF below 2^85 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	100000000
B2 =	5001188782590

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	262 / 640

Estimated T-Level: 27.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Cornelius Caesar	D0303D64C5972A46	0
Verified	1999-03-01	Jean-Yves Canart	D0303D64C5972A46	796873
Verified	2018-04-20	kkmrkkblmbrbk	D0303D64C5972A46	54484

History

Date	User	Type	Result
2023-01-20	LaurV	NF-PM1	B1=100000000, B2=5001188782590
2022-10-02	LaurV	NF-PM1	B1=100000000
2022-09-09	LaurV	NF	no factor from 2^71 to 2^72
2022-09-09	LaurV	NF	no factor from 2^70 to 2^71
2022-09-09	LaurV	NF	no factor from 2^69 to 2^70
2022-05-07	LaurV	NF-PM1	B1=57885161, B2=2100390512220
2022-03-22	LaurV	NF-PM1	B1=82589933
2022-03-04	LaurV	NF-PM1	B1=57885161, B2=579246627960
2022-02-07	LaurV	NF-PM1	B1=57885161
2022-01-30	LaurV	NF-PM1	B1=6972593, B2=112580788320
2022-01-23	LaurV	NF-PM1	B1=6972593
2021-08-12	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-15	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-20	kkmrkkblmbrbk	C-LL	D0303D64C5972A46
2016-12-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-12-25	Alexander Dubrovin	NF-PM1	B1=2000000, B2=65000000, E=12
2015-11-22	Alexander Dubrovin	NF-PM1	B1=1600000, B2=7000000, E=6
2015-11-22	Alexander Dubrovin	NF-PM1	B1=1000000, B2=5000000, E=6
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-05-04	Squeeky_Squirrel	NF-PM1	B1=160000, B2=4600000, E=6
2015-03-06	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-06	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-29	Joss	NF-PM1	B1=142622
2014-05-26	Joss	NF-PM1	B1=113811
2013-12-03	LaurV	NF	no factor from 2^62 to 2^63
2012-04-20	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-13	Oscar Östlin	NF-PM1	B1=85000, B2=1615000, E=6
2010-10-23	Oscar Östlin	NF-PM1	B1=75011
2009-01-10	Sturle Sunde	NF	no factor from 2^60 to 2^61

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