In the case that 21380*5^n+1 equals to 4276*5^(n+1)+1 , the following are prime:
4276*5^50626+1
21380*5^50625+1
106900*5^50624+1
Shouldn't we remove all multiples of 10 (which are multiples of 5) which have duplicate k's in the list? Like the k I mentioned above?
2822 / 14110 / 70550
18530 / 92650
4738 / 23690 / 118450
5114 / 25570 / 127850
5504 / 27520 / 137600
6082 / 30410 / 152050
6436 / 32180
6772 / 33860
And so on....The most left number is the 'base' number and the numbers following it are multiples of 5 of it. So why would we check for their primality, if we new the primality of a multiple of it?
Am I right? (Just a n00b on primality)
Also, I'm now reserving k = 24032 until n=100000
Last fiddled with by Templus on 20050106 at 10:43
