What is the Least Common Multiple of 12915 and 12921?

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 12915 and 12921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12915 and 12921, than apply into the LCM equation.

GCF(12915,12921) = 3
LCM(12915,12921) = ( 12915 × 12921) / 3
LCM(12915,12921) = 166874715 / 3
LCM(12915,12921) = 55624905

Least Common Multiple (LCM) of 12915 and 12921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12915 and 12921. First we will calculate the prime factors of 12915 and 12921.

Prime Factorization of 12915

Prime Factorization of 12921

Now multiplying the highest exponent prime factors to calculate the LCM of 12915 and 12921.

LCM(12915,12921) = 3² × 5¹ × 7¹ × 41¹ × 59¹ × 73¹
LCM(12915,12921) = 55624905