What is the Least Common Multiple of 64815 and 64820?

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 64815 and 64820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64815 and 64820, than apply into the LCM equation.

GCF(64815,64820) = 5
LCM(64815,64820) = ( 64815 × 64820) / 5
LCM(64815,64820) = 4201308300 / 5
LCM(64815,64820) = 840261660

Least Common Multiple (LCM) of 64815 and 64820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64815 and 64820. First we will calculate the prime factors of 64815 and 64820.

Prime Factorization of 64815

Prime Factorization of 64820

Now multiplying the highest exponent prime factors to calculate the LCM of 64815 and 64820.

LCM(64815,64820) = 3¹ × 5¹ × 29¹ × 149¹ × 2² × 7¹ × 463¹
LCM(64815,64820) = 840261660