Thread: Fun Sequence View Single Post
 2013-02-07, 10:36 #1 Sam Kennedy     Oct 2012 2·41 Posts Fun Sequence I've started searching this sequence for prime numbers: $((n+1)\mathrm{!}\ - \ n\mathrm{!})k + 1$ I like this sequence because N-1 is easy to factor so proving primality is straight forward. Are there any faster primality tests than rabin-miller for numbers like this? Has anyone searched a sequence similar to this?