1 763 137 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

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 =	296735739300

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	129 / 640

Estimated T-Level: 26.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Robert Clark	804546F412B32F4C	0
Verified	1998-11-28	Jakob Trier	804546F412B32F4C	1357893
Verified	2015-07-18	MadPoo	804546F412B32F4C	646190

History

Date	User	Type	Result
2023-07-27	linament	NF-PM1	B1=20000000, B2=296735739300
2023-07-27	linament	NF-PM1	B1=20000000
2023-05-07	Joss	NF-PM1	B1=1763137, B2=6271497960
2023-02-26	Joss	NF-PM1	B1=1763137, B2=2659734000
2023-01-06	Joss	NF-PM1	B1=1763137, B2=914683770
2022-08-02	masser	NF-PP1	Start=139/37, B1=1600000, B2=57600000
2019-08-16	TJAOI	NF	no factor from 2^67 to 2^68
2018-10-19	Joss	NF-PM1	B1=1763137, B2=193945070, E=12
2018-08-13	Joss	NF-PM1	B1=1763137, B2=176313700, E=12
2018-07-10	Joss	NF-PM1	B1=1763137, B2=88156850, E=12
2018-04-23	TJAOI	NF	no factor from 2^66 to 2^67
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
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-13	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-18	MadPoo	C-LL	804546F412B32F4C
2015-05-02	mikr	NF-PM1	B1=2475400, B2=86660000, E=12
2015-04-29	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-29	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-17	-Anonymous-	NF-PM1	B1=172806
2014-05-09	Joss	NF-PM1	B1=136403
2014-04-08	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1591250, 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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