What is the Least Common Multiple of 78816 and 78821?

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 78816 and 78821 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78816 and 78821, than apply into the LCM equation.

GCF(78816,78821) = 1
LCM(78816,78821) = ( 78816 × 78821) / 1
LCM(78816,78821) = 6212355936 / 1
LCM(78816,78821) = 6212355936

Least Common Multiple (LCM) of 78816 and 78821 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78816 and 78821. First we will calculate the prime factors of 78816 and 78821.

Prime Factorization of 78816

Prime Factorization of 78821

Now multiplying the highest exponent prime factors to calculate the LCM of 78816 and 78821.

LCM(78816,78821) = 2⁵ × 3¹ × 821¹ × 23² × 149¹
LCM(78816,78821) = 6212355936