What is the Least Common Multiple of 78388 and 78406?

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 78388 and 78406 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78388 and 78406, than apply into the LCM equation.

GCF(78388,78406) = 2
LCM(78388,78406) = ( 78388 × 78406) / 2
LCM(78388,78406) = 6146089528 / 2
LCM(78388,78406) = 3073044764

Least Common Multiple (LCM) of 78388 and 78406 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78388 and 78406. First we will calculate the prime factors of 78388 and 78406.

Prime Factorization of 78388

Prime Factorization of 78406

Now multiplying the highest exponent prime factors to calculate the LCM of 78388 and 78406.

LCM(78388,78406) = 2² × 19597¹ × 197¹ × 199¹
LCM(78388,78406) = 3073044764