What is the Least Common Multiple of 78478 and 78491?

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 78478 and 78491 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78478 and 78491, than apply into the LCM equation.

GCF(78478,78491) = 1
LCM(78478,78491) = ( 78478 × 78491) / 1
LCM(78478,78491) = 6159816698 / 1
LCM(78478,78491) = 6159816698

Least Common Multiple (LCM) of 78478 and 78491 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78478 and 78491. First we will calculate the prime factors of 78478 and 78491.

Prime Factorization of 78478

Prime Factorization of 78491

Now multiplying the highest exponent prime factors to calculate the LCM of 78478 and 78491.

LCM(78478,78491) = 2¹ × 39239¹ × 7¹ × 11213¹
LCM(78478,78491) = 6159816698