What is the Least Common Multiple of 31407 and 31422?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 31407 and 31422 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31407 and 31422, than apply into the LCM equation.

GCF(31407,31422) = 3
LCM(31407,31422) = ( 31407 × 31422) / 3
LCM(31407,31422) = 986870754 / 3
LCM(31407,31422) = 328956918

Least Common Multiple (LCM) of 31407 and 31422 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31407 and 31422. First we will calculate the prime factors of 31407 and 31422.

Prime Factorization of 31407

Prime Factorization of 31422

Now multiplying the highest exponent prime factors to calculate the LCM of 31407 and 31422.

LCM(31407,31422) = 3¹ × 19² × 29¹ × 2¹ × 5237¹
LCM(31407,31422) = 328956918