1 753 537 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	106 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Robert L Einkauf	8145C606C532B7AD	0
Verified	1999-03-15	Henrik Oluf Olsen	8145C606C532B7AD	61909
Verified	2015-07-10	MadPoo	8145C606C532B7AD	865209

History

Date	User	Type	Result
2023-07-25	linament	NF-PM1	B1=20000000, B2=296735739300
2023-07-24	Joss	NF-PM1	B1=1753537, B2=12742021110
2023-07-21	linament	NF-PM1	B1=17000000
2023-06-20	Joss	NF-PM1	B1=1753537, B2=5518414440
2023-01-31	Joss	NF-PM1	B1=1753537, B2=2267595330
2023-01-06	Joss	NF-PM1	B1=1753537, B2=826111440
2019-06-24	TJAOI	NF	no factor from 2^67 to 2^68
2018-10-18	Joss	NF-PM1	B1=1753537, B2=192889070, E=12
2018-10-05	Joss	NF-PM1	B1=1753537, B2=175353700, E=12
2018-10-03	Joss	NF-PM1	B1=1753537, B2=140282960, E=12
2018-06-11	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 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-10	MadPoo	C-LL	8145C606C532B7AD
2015-07-02	mikr	NF-PM1	B1=3642200, B2=123456789, E=12
2015-05-13	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-13	snme2pm1	NF	no factor from 2^63 to 2^64
2015-04-25	Squeeky_Squirrel	NF-PM1	B1=130000, B2=3640000, E=6
2014-09-16	-Anonymous-	NF-PM1	B1=173206
2014-05-06	Joss	NF-PM1	B1=136603
2014-04-08	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1567500, 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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