mersenneforum.org Probable prime with more than 400k digits
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 2019-02-10, 15:43 #1 enzocreti   Mar 2018 17×31 Posts Probable prime with more than 400k digits How much is important to find a probable prime with more than 400k digits?
2019-02-10, 16:02   #2
Dr Sardonicus

Feb 2017
Nowhere

26·5·13 Posts

Quote:
 Originally Posted by enzocreti How much is important to find a probable prime with more than 400k digits?
You can find 151 of them (as of this posting) right here. The top two have over 4 million digits.

Last fiddled with by Dr Sardonicus on 2019-02-10 at 16:03 Reason: Rephrasing

 2019-02-10, 16:17 #3 enzocreti   Mar 2018 20F16 Posts prp ...yes if my hutch is right, I should find another pg(43k) with exponent greater than 1 million...number of candidates drastically fall down because 43k have to be of the form 41s+r where r=1,10,16,18,37...I hope to find another prp of this form but passed exponent 1 million my computer is too slow with Pfgw...2/3 tests per day!!! and the number of candidates in a range of 100k is about 36. So 36/2=18 days!!! Last fiddled with by enzocreti on 2019-02-10 at 16:20

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