What is the Least Common Multiple of 84015 and 84020?

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 84015 and 84020 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 84015 and 84020, than apply into the LCM equation.

GCF(84015,84020) = 5
LCM(84015,84020) = ( 84015 × 84020) / 5
LCM(84015,84020) = 7058940300 / 5
LCM(84015,84020) = 1411788060

Least Common Multiple (LCM) of 84015 and 84020 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 84015 and 84020. First we will calculate the prime factors of 84015 and 84020.

Prime Factorization of 84015

Prime Factorization of 84020

Now multiplying the highest exponent prime factors to calculate the LCM of 84015 and 84020.

LCM(84015,84020) = 3² × 5¹ × 1867¹ × 2² × 4201¹
LCM(84015,84020) = 1411788060