1 772 087 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁸

TF target 2⁶¹

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

P-1

B1 =	20000000
B2 =	340095305550

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Kevin Postlewaite	007E76D41271E66B	0
Verified	1998-12-06	Michael Boss	007E76D41271E66B	1507889
Verified	2015-06-27	MadPoo	007E76D41271E66B	40089

History

Date	User	Type	Result
2023-08-01	linament	NF-PM1	B1=20000000, B2=340095305550
2023-08-01	linament	NF-PM1	B1=20000000
2023-05-11	Joss	NF-PM1	B1=1772087, B2=6150832380
2023-02-25	Joss	NF-PM1	B1=1772087, B2=2660699580
2023-01-07	Joss	NF-PM1	B1=1772087, B2=915674760
2022-08-02	masser	NF-PP1	Start=93/29, B1=1600000, B2=57600000
2019-07-24	TJAOI	NF	no factor from 2^67 to 2^68
2018-10-19	Joss	NF-PM1	B1=1772087, B2=194929570, E=12
2018-07-05	Joss	NF-PM1	B1=1772087, B2=177208700, E=12
2018-06-04	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-11	ramgeis	NF	no factor from 2^65 to 2^66
2015-06-27	MadPoo	C-LL	007E76D41271E66B
2015-05-16	mikr	NF-PM1	B1=2475400, B2=86660000, E=12
2015-05-01	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-01	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-18	Joss	NF-PM1	B1=172440
2014-05-09	Joss	NF-PM1	B1=136220
2014-04-10	-Anonymous-	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1615000, E=6
2010-12-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-20	Architects Cubed	NF	no factor from 2^60 to 2^61

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