If you are on Unix: primes 10000 99999 | less Then recall that "less" includes a regex-based search on the / key. This doesn't give you direction as to t

If you are on Unix: primes 10000 99999 | less Then recall that "less" includes a regex-based search on the / key. This doesn't give you direction as to the best to try, of course, but it's hard to beat it in terms of bang for the buck if you're just going to try a few.