Relatively Prime (Coprime) Calculator

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Enter any positive integer.
Enter any positive integer.
ResultCoprime
Yes - coprime (relatively prime)

Whether the two numbers are coprime

GCD (a, b)1
LCM (a, b)210
Prime factors of a2 x 7
Prime factors of b3 x 5
Euler's totient of a6
Euler's totient of b8
GCD1
Totient of a6
Totient of b8

14 and 15 are relatively prime.

  • GCD(14, 15) = 1, confirming they share no common prime factor.
  • Their LCM equals their product: 14 x 15 = 210.
  • Coprime pairs are used in fraction simplification, RSA encryption, and gear-ratio design where no common factor is acceptable.

Next stepThese numbers are safe to use as independent moduli, numerators/denominators in lowest terms, or gear-tooth counts.

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