What is the Least Common Multiple of 99815 and 99820?

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 99815 and 99820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 99815 and 99820, than apply into the LCM equation.

GCF(99815,99820) = 5
LCM(99815,99820) = ( 99815 × 99820) / 5
LCM(99815,99820) = 9963533300 / 5
LCM(99815,99820) = 1992706660

Least Common Multiple (LCM) of 99815 and 99820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 99815 and 99820. First we will calculate the prime factors of 99815 and 99820.

Prime Factorization of 99815

Prime Factorization of 99820

Now multiplying the highest exponent prime factors to calculate the LCM of 99815 and 99820.

LCM(99815,99820) = 5¹ × 19963¹ × 2² × 7¹ × 23¹ × 31¹
LCM(99815,99820) = 1992706660