What is the Least Common Multiple of 72915 and 72921?

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 72915 and 72921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72915 and 72921, than apply into the LCM equation.

GCF(72915,72921) = 3
LCM(72915,72921) = ( 72915 × 72921) / 3
LCM(72915,72921) = 5317034715 / 3
LCM(72915,72921) = 1772344905

Least Common Multiple (LCM) of 72915 and 72921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72915 and 72921. First we will calculate the prime factors of 72915 and 72921.

Prime Factorization of 72915

Prime Factorization of 72921

Now multiplying the highest exponent prime factors to calculate the LCM of 72915 and 72921.

LCM(72915,72921) = 3¹ × 5¹ × 4861¹ × 109¹ × 223¹
LCM(72915,72921) = 1772344905