What is the Least Common Multiple of 30831 and 30840?

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 30831 and 30840 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30831 and 30840, than apply into the LCM equation.

GCF(30831,30840) = 3
LCM(30831,30840) = ( 30831 × 30840) / 3
LCM(30831,30840) = 950828040 / 3
LCM(30831,30840) = 316942680

Least Common Multiple (LCM) of 30831 and 30840 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30831 and 30840. First we will calculate the prime factors of 30831 and 30840.

Prime Factorization of 30831

Prime Factorization of 30840

Now multiplying the highest exponent prime factors to calculate the LCM of 30831 and 30840.

LCM(30831,30840) = 3¹ × 43¹ × 239¹ × 2³ × 5¹ × 257¹
LCM(30831,30840) = 316942680