What is the Least Common Multiple of 9615 and 9620?

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 9615 and 9620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9615 and 9620, than apply into the LCM equation.

GCF(9615,9620) = 5
LCM(9615,9620) = ( 9615 × 9620) / 5
LCM(9615,9620) = 92496300 / 5
LCM(9615,9620) = 18499260

Least Common Multiple (LCM) of 9615 and 9620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9615 and 9620. First we will calculate the prime factors of 9615 and 9620.

Prime Factorization of 9615

Prime Factorization of 9620

Now multiplying the highest exponent prime factors to calculate the LCM of 9615 and 9620.

LCM(9615,9620) = 3¹ × 5¹ × 641¹ × 2² × 13¹ × 37¹
LCM(9615,9620) = 18499260