What is the Least Common Multiple of 90642 and 90646?

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 90642 and 90646 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90642 and 90646, than apply into the LCM equation.

GCF(90642,90646) = 2
LCM(90642,90646) = ( 90642 × 90646) / 2
LCM(90642,90646) = 8216334732 / 2
LCM(90642,90646) = 4108167366

Least Common Multiple (LCM) of 90642 and 90646 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90642 and 90646. First we will calculate the prime factors of 90642 and 90646.

Prime Factorization of 90642

Prime Factorization of 90646

Now multiplying the highest exponent prime factors to calculate the LCM of 90642 and 90646.

LCM(90642,90646) = 2¹ × 3¹ × 15107¹ × 61¹ × 743¹
LCM(90642,90646) = 4108167366