What is the Least Common Multiple of 67631 and 67640?

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 67631 and 67640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67631 and 67640, than apply into the LCM equation.

GCF(67631,67640) = 1
LCM(67631,67640) = ( 67631 × 67640) / 1
LCM(67631,67640) = 4574560840 / 1
LCM(67631,67640) = 4574560840

Least Common Multiple (LCM) of 67631 and 67640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67631 and 67640. First we will calculate the prime factors of 67631 and 67640.

Prime Factorization of 67631

Prime Factorization of 67640

Now multiplying the highest exponent prime factors to calculate the LCM of 67631 and 67640.

LCM(67631,67640) = 67631¹ × 2³ × 5¹ × 19¹ × 89¹
LCM(67631,67640) = 4574560840