What is the Least Common Multiple of 8708 and 8720?

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 8708 and 8720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8708 and 8720, than apply into the LCM equation.

GCF(8708,8720) = 4
LCM(8708,8720) = ( 8708 × 8720) / 4
LCM(8708,8720) = 75933760 / 4
LCM(8708,8720) = 18983440

Least Common Multiple (LCM) of 8708 and 8720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 8708 and 8720. First we will calculate the prime factors of 8708 and 8720.

Prime Factorization of 8708

Prime Factorization of 8720

Now multiplying the highest exponent prime factors to calculate the LCM of 8708 and 8720.

LCM(8708,8720) = 2⁴ × 7¹ × 311¹ × 5¹ × 109¹
LCM(8708,8720) = 18983440