What is the Least Common Multiple of 64645 and 64660?

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 64645 and 64660 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64645 and 64660, than apply into the LCM equation.

GCF(64645,64660) = 5
LCM(64645,64660) = ( 64645 × 64660) / 5
LCM(64645,64660) = 4179945700 / 5
LCM(64645,64660) = 835989140

Least Common Multiple (LCM) of 64645 and 64660 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64645 and 64660. First we will calculate the prime factors of 64645 and 64660.

Prime Factorization of 64645

Prime Factorization of 64660

Now multiplying the highest exponent prime factors to calculate the LCM of 64645 and 64660.

LCM(64645,64660) = 5¹ × 7¹ × 1847¹ × 2² × 53¹ × 61¹
LCM(64645,64660) = 835989140