What is the Least Common Multiple of 99915 and 99921?

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 99915 and 99921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 99915 and 99921, than apply into the LCM equation.

GCF(99915,99921) = 3
LCM(99915,99921) = ( 99915 × 99921) / 3
LCM(99915,99921) = 9983606715 / 3
LCM(99915,99921) = 3327868905

Least Common Multiple (LCM) of 99915 and 99921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 99915 and 99921. First we will calculate the prime factors of 99915 and 99921.

Prime Factorization of 99915

Prime Factorization of 99921

Now multiplying the highest exponent prime factors to calculate the LCM of 99915 and 99921.

LCM(99915,99921) = 3¹ × 5¹ × 6661¹ × 19¹ × 1753¹
LCM(99915,99921) = 3327868905