What is the Least Common Multiple of 31891 and 31909?

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 31891 and 31909 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31891 and 31909, than apply into the LCM equation.

GCF(31891,31909) = 1
LCM(31891,31909) = ( 31891 × 31909) / 1
LCM(31891,31909) = 1017609919 / 1
LCM(31891,31909) = 1017609919

Least Common Multiple (LCM) of 31891 and 31909 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31891 and 31909. First we will calculate the prime factors of 31891 and 31909.

Prime Factorization of 31891

Prime Factorization of 31909

Now multiplying the highest exponent prime factors to calculate the LCM of 31891 and 31909.

LCM(31891,31909) = 31891¹ × 17¹ × 1877¹
LCM(31891,31909) = 1017609919