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 2021-01-07, 04:33 #1 tuckerkao   Jan 2020 157 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
2021-01-07, 06:33   #2
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

2×34×37 Posts

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.

Last fiddled with by retina on 2021-01-07 at 06:33

2021-01-07, 06:50   #3
Uncwilly
6809 > 6502

"""""""""""""""""""
Aug 2003
101×103 Posts

23×3×383 Posts

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.

Last fiddled with by Uncwilly on 2021-01-07 at 06:54

 2021-01-09, 11:39 #4 tuckerkao   Jan 2020 2358 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 3×11×277 Posts you mean, like, half year ago?

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