What is the Least Common Multiple of 7470 and 7478?

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 7470 and 7478 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7470 and 7478, than apply into the LCM equation.

GCF(7470,7478) = 2
LCM(7470,7478) = ( 7470 × 7478) / 2
LCM(7470,7478) = 55860660 / 2
LCM(7470,7478) = 27930330

Least Common Multiple (LCM) of 7470 and 7478 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7470 and 7478. First we will calculate the prime factors of 7470 and 7478.

Prime Factorization of 7470

Prime Factorization of 7478

Now multiplying the highest exponent prime factors to calculate the LCM of 7470 and 7478.

LCM(7470,7478) = 2¹ × 3² × 5¹ × 83¹ × 3739¹
LCM(7470,7478) = 27930330