What is the Least Common Multiple of 64540 and 64558?

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 64540 and 64558 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64540 and 64558, than apply into the LCM equation.

GCF(64540,64558) = 2
LCM(64540,64558) = ( 64540 × 64558) / 2
LCM(64540,64558) = 4166573320 / 2
LCM(64540,64558) = 2083286660

Least Common Multiple (LCM) of 64540 and 64558 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64540 and 64558. First we will calculate the prime factors of 64540 and 64558.

Prime Factorization of 64540

Prime Factorization of 64558

Now multiplying the highest exponent prime factors to calculate the LCM of 64540 and 64558.

LCM(64540,64558) = 2² × 5¹ × 7¹ × 461¹ × 13² × 191¹
LCM(64540,64558) = 2083286660