What is the Least Common Multiple of 78564 and 78580?

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 78564 and 78580 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78564 and 78580, than apply into the LCM equation.

GCF(78564,78580) = 4
LCM(78564,78580) = ( 78564 × 78580) / 4
LCM(78564,78580) = 6173559120 / 4
LCM(78564,78580) = 1543389780

Least Common Multiple (LCM) of 78564 and 78580 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78564 and 78580. First we will calculate the prime factors of 78564 and 78580.

Prime Factorization of 78564

Prime Factorization of 78580

Now multiplying the highest exponent prime factors to calculate the LCM of 78564 and 78580.

LCM(78564,78580) = 2² × 3¹ × 6547¹ × 5¹ × 3929¹
LCM(78564,78580) = 1543389780