What is the Least Common Multiple of 12781 and 12790?

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 12781 and 12790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12781 and 12790, than apply into the LCM equation.

GCF(12781,12790) = 1
LCM(12781,12790) = ( 12781 × 12790) / 1
LCM(12781,12790) = 163468990 / 1
LCM(12781,12790) = 163468990

Least Common Multiple (LCM) of 12781 and 12790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12781 and 12790. First we will calculate the prime factors of 12781 and 12790.

Prime Factorization of 12781

Prime Factorization of 12790

Now multiplying the highest exponent prime factors to calculate the LCM of 12781 and 12790.

LCM(12781,12790) = 12781¹ × 2¹ × 5¹ × 1279¹
LCM(12781,12790) = 163468990