What is the Least Common Multiple of 12642 and 12646?

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 12642 and 12646 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12642 and 12646, than apply into the LCM equation.

GCF(12642,12646) = 2
LCM(12642,12646) = ( 12642 × 12646) / 2
LCM(12642,12646) = 159870732 / 2
LCM(12642,12646) = 79935366

Least Common Multiple (LCM) of 12642 and 12646 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12642 and 12646. First we will calculate the prime factors of 12642 and 12646.

Prime Factorization of 12642

Prime Factorization of 12646

Now multiplying the highest exponent prime factors to calculate the LCM of 12642 and 12646.

LCM(12642,12646) = 2¹ × 3¹ × 7² × 43¹ × 6323¹
LCM(12642,12646) = 79935366