Euler totient φ(n)
Euler's totient φ(n) counts coprime residues—essential for RSA toy examples and modular arithmetic exercises.
ClientNearby workflows on Toolcore
- 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.
- GCD & LCM calculator — Greatest common divisor and least common multiple for two non-negative integers—BigInt, local only. when units or numeric output should be checked on a related calculator.
- Modulo calculator — Integer remainder and truncated quotient (a mod b)—BigInt math in your browser. when units or numeric output should be checked on a related calculator.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
Common use cases
- Use euler totient φ(n) during homework or spreadsheet spot checks.
- Copy results into notes without sending data to a server.
Common mistakes to avoid
Wrong units
Keep length, area, and volume inputs in consistent units.
FAQ
Is data uploaded?
No—all math runs locally in your browser.
More tools
Related utilities you can open in another tab—mostly client-side.
Prime factorization
ClientFactor whole numbers into prime products—BigInt trial division in your browser, no upload.
GCD & LCM calculator
ClientGreatest common divisor and least common multiple for two non-negative integers—BigInt, local only.
Modulo calculator
ClientInteger remainder and truncated quotient (a mod b)—BigInt math in your browser.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.