What is the Least Common Multiple of 9710 and 9720?

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 9710 and 9720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9710 and 9720, than apply into the LCM equation.

GCF(9710,9720) = 10
LCM(9710,9720) = ( 9710 × 9720) / 10
LCM(9710,9720) = 94381200 / 10
LCM(9710,9720) = 9438120

Least Common Multiple (LCM) of 9710 and 9720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9710 and 9720. First we will calculate the prime factors of 9710 and 9720.

Prime Factorization of 9710

Prime Factorization of 9720

Now multiplying the highest exponent prime factors to calculate the LCM of 9710 and 9720.

LCM(9710,9720) = 2³ × 5¹ × 971¹ × 3⁵
LCM(9710,9720) = 9438120