What is the Least Common Multiple of 31840 and 31858?

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 31840 and 31858 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31840 and 31858, than apply into the LCM equation.

GCF(31840,31858) = 2
LCM(31840,31858) = ( 31840 × 31858) / 2
LCM(31840,31858) = 1014358720 / 2
LCM(31840,31858) = 507179360

Least Common Multiple (LCM) of 31840 and 31858 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31840 and 31858. First we will calculate the prime factors of 31840 and 31858.

Prime Factorization of 31840

Prime Factorization of 31858

Now multiplying the highest exponent prime factors to calculate the LCM of 31840 and 31858.

LCM(31840,31858) = 2⁵ × 5¹ × 199¹ × 17¹ × 937¹
LCM(31840,31858) = 507179360