What is the Least Common Multiple of 1491 and 1511?

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 1511 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 1511, than apply into the LCM equation.

GCF(1491,1511) = 1
LCM(1491,1511) = ( 1491 × 1511) / 1
LCM(1491,1511) = 2252901 / 1
LCM(1491,1511) = 2252901

Least Common Multiple (LCM) of 1491 and 1511 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1491 and 1511. First we will calculate the prime factors of 1491 and 1511.

Prime Factorization of 1491

Prime Factorization of 1511

Now multiplying the highest exponent prime factors to calculate the LCM of 1491 and 1511.

LCM(1491,1511) = 3¹ × 7¹ × 71¹ × 1511¹
LCM(1491,1511) = 2252901