Search database

At the PrimePages 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.

Search Database of the Largest Known Primes
for primes of the form: *k^.bⁿ*+/-1
Base b	base
Limit on multiplier k (leave blank for no limit)	minimum maximum
Limit on exponent n (leave blank for no limit)	minimum maximum
Which sign(s)?	plus minus
Find at most	number
	(other searches)