What is the Least Common Multiple of 72821 and 72840?

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 72821 and 72840 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72821 and 72840, than apply into the LCM equation.

GCF(72821,72840) = 1
LCM(72821,72840) = ( 72821 × 72840) / 1
LCM(72821,72840) = 5304281640 / 1
LCM(72821,72840) = 5304281640

Least Common Multiple (LCM) of 72821 and 72840 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72821 and 72840. First we will calculate the prime factors of 72821 and 72840.

Prime Factorization of 72821

Prime Factorization of 72840

Now multiplying the highest exponent prime factors to calculate the LCM of 72821 and 72840.

LCM(72821,72840) = 7¹ × 101¹ × 103¹ × 2³ × 3¹ × 5¹ × 607¹
LCM(72821,72840) = 5304281640