What is the Least Common Multiple of 1470 and 1478?

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 1470 and 1478 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1470 and 1478, than apply into the LCM equation.

GCF(1470,1478) = 2
LCM(1470,1478) = ( 1470 × 1478) / 2
LCM(1470,1478) = 2172660 / 2
LCM(1470,1478) = 1086330

Least Common Multiple (LCM) of 1470 and 1478 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1470 and 1478. First we will calculate the prime factors of 1470 and 1478.

Prime Factorization of 1470

Prime Factorization of 1478

Now multiplying the highest exponent prime factors to calculate the LCM of 1470 and 1478.

LCM(1470,1478) = 2¹ × 3¹ × 5¹ × 7² × 739¹
LCM(1470,1478) = 1086330