What is the Least Common Multiple of 1491 and 1503?

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 1491 and 1503 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1491 and 1503, than apply into the LCM equation.

GCF(1491,1503) = 3
LCM(1491,1503) = ( 1491 × 1503) / 3
LCM(1491,1503) = 2240973 / 3
LCM(1491,1503) = 746991

Least Common Multiple (LCM) of 1491 and 1503 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1491 and 1503. First we will calculate the prime factors of 1491 and 1503.

Prime Factorization of 1491

Prime Factorization of 1503

Now multiplying the highest exponent prime factors to calculate the LCM of 1491 and 1503.

LCM(1491,1503) = 3² × 7¹ × 71¹ × 167¹
LCM(1491,1503) = 746991