20200523, 18:03  #12  
May 2020
5 Posts 
Prime Number
Quote:


20200523, 18:38  #13  
Sep 2002
Database er0rr
110101110110_{2} Posts 
Quote:
How many tons of coal are needed to LL test it? What do you calculate the "chance" of being prime is? Let me give you an example prime p=2^825899331 definitely has no small factors. So is 2^p1 prime? Anyone? Last fiddled with by paulunderwood on 20200523 at 18:47 

20200523, 18:58  #14 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
21650_{8} Posts 

20200523, 21:26  #15 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2·2,309 Posts 
That reply to my post has nothing to do with my post. It's a ~75.89 bit exponent, making the corresponding Mersenne number untestable for primality or P1 factoring in existing software, or realistic hardware lifetime or memory capacity, and is only factorable by slow cpu TF. But it earns a spot in the dubiousclaims list, for which the track record is zero primes proven to date of several dozen entries; a handful yet to be resolved.
Last fiddled with by kriesel on 20200523 at 21:27 
20200523, 22:04  #16 
"Kieren"
Jul 2011
In My Own Galaxy!
2707_{16} Posts 

20200523, 23:25  #17  
Jul 2003
wear a mask
2^{2}·19^{2} Posts 
Quote:


20200524, 19:52  #18 
"KarlHeinz Hofmann"
Jan 2017
Gr.Rohrheim Germany
2^{3}·3 Posts 
What do you claim ? :
Is 2 ^ 70237298350549551468899 – 1 a prime Number ? or is 2 ^ 102589933 – 1 a prime Number ? Please be accurate with your claims. 
20200525, 20:43  #19  
"Dylan"
Mar 2017
3×173 Posts 
Quote:
With regards to the second  someone is running a PRP test on it. Assuming the machine that is running it is being run 24/7 on this number and it is a reasonably modern machine, we should know within a few weeks whether it is probably prime (in which case it will be tested with LL to conclude definitively whether it is prime) or not (in which case it's composite). 

20200526, 11:18  #20 
"KarlHeinz Hofmann"
Jan 2017
Gr.Rohrheim Germany
11000_{2} Posts 
Going to 111,67 bit but still no factor. Going further a little bit.

20200530, 09:31  #21 
Oct 2018
Slovakia
82_{10} Posts 
M102589933 is(probably) not prime. I tested with GPUowl.

20200530, 13:59  #22 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
10001000100000_{2} Posts 
Thanks, we can now leave this to rest in peace.

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