What is the Least Common Multiple of 9810 and 9815?

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 9810 and 9815 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9810 and 9815, than apply into the LCM equation.

GCF(9810,9815) = 5
LCM(9810,9815) = ( 9810 × 9815) / 5
LCM(9810,9815) = 96285150 / 5
LCM(9810,9815) = 19257030

Least Common Multiple (LCM) of 9810 and 9815 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9810 and 9815. First we will calculate the prime factors of 9810 and 9815.

Prime Factorization of 9810

Prime Factorization of 9815

Now multiplying the highest exponent prime factors to calculate the LCM of 9810 and 9815.

LCM(9810,9815) = 2¹ × 3² × 5¹ × 109¹ × 13¹ × 151¹
LCM(9810,9815) = 19257030