What is the Least Common Multiple of 64564 and 64580?

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 64564 and 64580 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64564 and 64580, than apply into the LCM equation.

GCF(64564,64580) = 4
LCM(64564,64580) = ( 64564 × 64580) / 4
LCM(64564,64580) = 4169543120 / 4
LCM(64564,64580) = 1042385780

Least Common Multiple (LCM) of 64564 and 64580 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64564 and 64580. First we will calculate the prime factors of 64564 and 64580.

Prime Factorization of 64564

Prime Factorization of 64580

Now multiplying the highest exponent prime factors to calculate the LCM of 64564 and 64580.

LCM(64564,64580) = 2² × 16141¹ × 5¹ × 3229¹
LCM(64564,64580) = 1042385780