What is the Least Common Multiple of 78454 and 78458?

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 78454 and 78458 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78454 and 78458, than apply into the LCM equation.

GCF(78454,78458) = 2
LCM(78454,78458) = ( 78454 × 78458) / 2
LCM(78454,78458) = 6155343932 / 2
LCM(78454,78458) = 3077671966

Least Common Multiple (LCM) of 78454 and 78458 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78454 and 78458. First we will calculate the prime factors of 78454 and 78458.

Prime Factorization of 78454

Prime Factorization of 78458

Now multiplying the highest exponent prime factors to calculate the LCM of 78454 and 78458.

LCM(78454,78458) = 2¹ × 39227¹ × 39229¹
LCM(78454,78458) = 3077671966