Next prime number
Scan upward from n+1 to find the next prime.
ClientNearby workflows on Toolcore
- Previous prime number — Largest prime strictly less than n. when units or numeric output should be checked on a related calculator.
- Prime gap calculator — Gap to the next prime after a given prime n. when units or numeric output should be checked on a related calculator.
- Prime number checker — Test whether a whole number is prime—BigInt trial division in your browser, no upload. when units or numeric output should be checked on a related calculator.
- Prime factorization — Factor whole numbers into prime products—BigInt trial division in your browser, no upload. when units or numeric output should be checked on a related calculator.
Common use cases
- Next prime number for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
Previous prime number
ClientLargest prime strictly less than n.
Prime gap calculator
ClientGap to the next prime after a given prime n.
Prime number checker
ClientTest whether a whole number is prime—BigInt trial division in your browser, no upload.
Prime factorization
ClientFactor whole numbers into prime products—BigInt trial division in your browser, no upload.