Found a Factor on my first P-1 Test

tuckerkao · 2021-01-07, 04:33

It was probably a pure luck that I found a factor during the stage 1 when factoring an exponent -
https://www.mersenne.org/report_expo...exp_hi=&full=1

I felt this number was a composite number at the beginning since there is a 3 of a kind(has to be an even number) for the digits when convert into the dozenal base: 2Ӿ71Ӿ5Ӿ7 and its ending digit is not 5, just to see whether Kriesel was right.

retina · 2021-01-07, 06:33

Quote:

Originally Posted by tuckerkao

It was probably a pure luck that I found a factor during the stage 1 when factoring an exponent ...

It was definitely pure luck. No doubt about it. Doing base conversion into base-12 won't help you to determine if a number is prime or not.

Uncwilly · 2021-01-07, 06:50

Quote:

Originally Posted by tuckerkao

I felt this number was a composite number at the beginning since

I have a feeling that every Mersenne number that you test (that is not an already known MP) will be composite. I have statistics on my side.

tuckerkao · 2021-01-09, 11:39

Hmmm, Ben Delo already tested this exponent, wondering who got him here?
https://www.mersenne.org/report_expo...exp_hi=&full=1

LaurV · 2021-01-14, 10:02

you mean, like, half year ago?

2021-01-07, 04:33	#1
tuckerkao Jan 2020 13² Posts	Found a Factor on my first P-1 Test It was probably a pure luck that I found a factor during the stage 1 when factoring an exponent - https://www.mersenne.org/report_expo...exp_hi=&full=1 I felt this number was a composite number at the beginning since there is a 3 of a kind(has to be an even number) for the digits when convert into the dozenal base: 2Ӿ71Ӿ5Ӿ7 and its ending digit is not 5, just to see whether Kriesel was right. Last fiddled with by tuckerkao on 2021-01-07 at 04:39

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2021-01-09, 11:39	#4
tuckerkao Jan 2020 13² Posts	Hmmm, Ben Delo already tested this exponent, wondering who got him here? https://www.mersenne.org/report_expo...exp_hi=&full=1

2021-01-14, 10:02	#5
LaurV Romulan Interpreter Jun 2011 Thailand 59·157 Posts	you mean, like, half year ago?