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Old 2013-05-16, 01:05   #1
miket
 
May 2013

32 Posts
Default Prime abc conjecture b == (a-1)/(2^c)

Prime numbers generated by the prime abc conjecture when c=4: suppose a is positive, odd and not a multiple of 3 and b is the cycle length of a as defined below. Then if b == (a-1)/(2^c) for some positive integer c then a is prime.
The cycle length of 2n-1 is OEIS A179382(n).

Example:
11 = 5*2^1+1
11 (1,3, 7, 9, 5)

Prime numbers generated by the prime abc conjecture when c=4,see OEIS A225759.

Last fiddled with by ewmayer on 2013-05-21 at 19:32 Reason: remove annoying xtra-large font
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