What is the Least Common Multiple of 13686 and 13690?

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 13686 and 13690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13686 and 13690, than apply into the LCM equation.

GCF(13686,13690) = 2
LCM(13686,13690) = ( 13686 × 13690) / 2
LCM(13686,13690) = 187361340 / 2
LCM(13686,13690) = 93680670

Least Common Multiple (LCM) of 13686 and 13690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13686 and 13690. First we will calculate the prime factors of 13686 and 13690.

Prime Factorization of 13686

Prime Factorization of 13690

Now multiplying the highest exponent prime factors to calculate the LCM of 13686 and 13690.

LCM(13686,13690) = 2¹ × 3¹ × 2281¹ × 5¹ × 37²
LCM(13686,13690) = 93680670