What is the Least Common Multiple of 66915 and 66921?

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 66915 and 66921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66915 and 66921, than apply into the LCM equation.

GCF(66915,66921) = 3
LCM(66915,66921) = ( 66915 × 66921) / 3
LCM(66915,66921) = 4478018715 / 3
LCM(66915,66921) = 1492672905

Least Common Multiple (LCM) of 66915 and 66921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 66915 and 66921. First we will calculate the prime factors of 66915 and 66921.

Prime Factorization of 66915

Prime Factorization of 66921

Now multiplying the highest exponent prime factors to calculate the LCM of 66915 and 66921.

LCM(66915,66921) = 3² × 5¹ × 1487¹ × 22307¹
LCM(66915,66921) = 1492672905