What is the Least Common Multiple of 621 and 627?

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 621 and 627 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 621 and 627, than apply into the LCM equation.

GCF(621,627) = 3
LCM(621,627) = ( 621 × 627) / 3
LCM(621,627) = 389367 / 3
LCM(621,627) = 129789

Least Common Multiple (LCM) of 621 and 627 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 621 and 627. First we will calculate the prime factors of 621 and 627.

Prime Factorization of 621

Prime Factorization of 627

Now multiplying the highest exponent prime factors to calculate the LCM of 621 and 627.

LCM(621,627) = 3³ × 23¹ × 11¹ × 19¹
LCM(621,627) = 129789