1 422 821 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁸

TF target 2⁶⁰

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

P-1

B1 =	16500000
B2 =	114790605930

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Dan Spieler	78AAF323E7A0C94D	0
Verified		Cornelius Caesar	78AAF323E7A0C94D	0
Verified	2015-07-19	MadPoo	78AAF323E7A0C94D	1080274

History

Date	User	Type	Result
2023-09-30	Sid & Andy	NF-PM1	B1=16500000, B2=114790605930
2023-07-01	Joss	NF-PM1	B1=1422821, B2=10473434790
2023-03-02	Joss	NF-PM1	B1=1422821, B2=4509214710
2022-12-21	Joss	NF-PM1	B1=1422821, B2=1527152550
2020-04-07	Yxinity	NF	no factor from 2^67 to 2^68
2018-10-15	Joss	NF-PM1	B1=1422821, B2=156510310, E=12
2018-05-25	Joss	NF-PM1	B1=1422821, B2=142282100, E=12
2018-04-30	TJAOI	NF	no factor from 2^66 to 2^67
2016-08-27	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-08-16	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-09-29	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-19	MadPoo	C-LL	78AAF323E7A0C94D
2015-03-17	snme2pm1	NF	no factor from 2^64 to 2^65
2015-03-17	snme2pm1	NF	no factor from 2^63 to 2^64
2015-03-11	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2015-02-20	Joss	NF-PM1	B1=444874
2015-02-15	Joss	NF-PM1	B1=404431
2015-01-15	Joss	NF-PM1	B1=367665
2014-11-10	Joss	NF-PM1	B1=245110
2011-04-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2009-07-30	markr	NF-PM1	B1=200000, B2=5000000, E=6
2009-02-15	Sturle Sunde	NF	no factor from 2^60 to 2^61

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