What is the Least Common Multiple of 21915 and 21933?

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 21915 and 21933 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21915 and 21933, than apply into the LCM equation.

GCF(21915,21933) = 9
LCM(21915,21933) = ( 21915 × 21933) / 9
LCM(21915,21933) = 480661695 / 9
LCM(21915,21933) = 53406855

Least Common Multiple (LCM) of 21915 and 21933 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21915 and 21933. First we will calculate the prime factors of 21915 and 21933.

Prime Factorization of 21915

Prime Factorization of 21933

Now multiplying the highest exponent prime factors to calculate the LCM of 21915 and 21933.

LCM(21915,21933) = 3² × 5¹ × 487¹ × 2437¹
LCM(21915,21933) = 53406855