533 509 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁸

TF target 2⁴⁴

TF below 2^97 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	70000000
B2 =	2417096561880

ECM

Estimated T-Level: 30.6 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	27F7	0
Verified		Claude Barbe	A74C6F135F8F27F7	0
Verified		Klaus Kastens	A74C6F135F8F27F7	486572
Verified	2015-04-11	MadPoo	A74C6F135F8F27F7	355471

History

Date	User	Type	Result
2023-09-19	linament	NF-PM1	B1=70000000, B2=2417096561880
2023-09-18	linament	NF-PM1	B1=70000000
2023-06-19	Joss	NF-PM1	B1=1501541, B2=77172595500
2023-01-17	Joss	NF-PM1	B1=1501541, B2=11408096700
2022-12-20	masser	NF-PP1	Start=6/5, B1=8000000, B2=216000000
2022-12-18	masser	NF-PP1	Start=2/7, B1=16000000, B2=496000000
2022-12-13	masser	NF-PP1	Start=182/67, B1=4000000, B2=96000000
2022-05-07	Gordon Spence	NF	no factor from 2^67 to 2^68
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-09-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2020-09-21	Yxinity	NF	no factor from 2^66 to 2^67
2018-05-23	chuenkit	NF	no factor from 2^65 to 2^66
2017-08-13	Conductor	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^61
2015-09-02	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-09-02	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-09	NR	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	A74C6F135F8F27F7
2013-02-06	markr	NF-PM1	B1=25000000, B2=1000000000, E=12
2011-09-24	Joss	NF-PM1	B1=1500541
2011-07-26	Joss	NF-PM1	B1=750270
2011-06-26	Joss	NF-PM1	B1=450162
2011-06-13	Joss	NF-PM1	B1=400000

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