What is the Least Common Multiple of 7008 and 7020?

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 7008 and 7020 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7008 and 7020, than apply into the LCM equation.

GCF(7008,7020) = 12
LCM(7008,7020) = ( 7008 × 7020) / 12
LCM(7008,7020) = 49196160 / 12
LCM(7008,7020) = 4099680

Least Common Multiple (LCM) of 7008 and 7020 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7008 and 7020. First we will calculate the prime factors of 7008 and 7020.

Prime Factorization of 7008

Prime Factorization of 7020

Now multiplying the highest exponent prime factors to calculate the LCM of 7008 and 7020.

LCM(7008,7020) = 2⁵ × 3³ × 73¹ × 5¹ × 13¹
LCM(7008,7020) = 4099680