The nth Prime Page will now find any of the first 2,623,557,157,654,233 primes or
π(x) for x up to 100,000,000,000,000,000.
At the Prime Pages we keep a database of the
5,000 largest known primes (plus the top
twenty of certain selected types). A commonly requested search is to find
all of the primes of the form k.bn+/-1 with
restrictions on k and n. This page is designed to make that easy.