What is the Least Common Multiple of 84960 and 84972?

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 84960 and 84972 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 84960 and 84972, than apply into the LCM equation.

GCF(84960,84972) = 12
LCM(84960,84972) = ( 84960 × 84972) / 12
LCM(84960,84972) = 7219221120 / 12
LCM(84960,84972) = 601601760

Least Common Multiple (LCM) of 84960 and 84972 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 84960 and 84972. First we will calculate the prime factors of 84960 and 84972.

Prime Factorization of 84960

Prime Factorization of 84972

Now multiplying the highest exponent prime factors to calculate the LCM of 84960 and 84972.

LCM(84960,84972) = 2⁵ × 3² × 5¹ × 59¹ × 73¹ × 97¹
LCM(84960,84972) = 601601760