What is the Least Common Multiple of 31158 and 31170?

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 31158 and 31170 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31158 and 31170, than apply into the LCM equation.

GCF(31158,31170) = 6
LCM(31158,31170) = ( 31158 × 31170) / 6
LCM(31158,31170) = 971194860 / 6
LCM(31158,31170) = 161865810

Least Common Multiple (LCM) of 31158 and 31170 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31158 and 31170. First we will calculate the prime factors of 31158 and 31170.

Prime Factorization of 31158

Prime Factorization of 31170

Now multiplying the highest exponent prime factors to calculate the LCM of 31158 and 31170.

LCM(31158,31170) = 2¹ × 3³ × 577¹ × 5¹ × 1039¹
LCM(31158,31170) = 161865810