What is the Least Common Multiple of 13815 and 13825?

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 13815 and 13825 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13815 and 13825, than apply into the LCM equation.

GCF(13815,13825) = 5
LCM(13815,13825) = ( 13815 × 13825) / 5
LCM(13815,13825) = 190992375 / 5
LCM(13815,13825) = 38198475

Least Common Multiple (LCM) of 13815 and 13825 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13815 and 13825. First we will calculate the prime factors of 13815 and 13825.

Prime Factorization of 13815

Prime Factorization of 13825

Now multiplying the highest exponent prime factors to calculate the LCM of 13815 and 13825.

LCM(13815,13825) = 3² × 5² × 307¹ × 7¹ × 79¹
LCM(13815,13825) = 38198475