What is the Least Common Multiple of 13940 and 13955?

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 13940 and 13955 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13940 and 13955, than apply into the LCM equation.

GCF(13940,13955) = 5
LCM(13940,13955) = ( 13940 × 13955) / 5
LCM(13940,13955) = 194532700 / 5
LCM(13940,13955) = 38906540

Least Common Multiple (LCM) of 13940 and 13955 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13940 and 13955. First we will calculate the prime factors of 13940 and 13955.

Prime Factorization of 13940

Prime Factorization of 13955

Now multiplying the highest exponent prime factors to calculate the LCM of 13940 and 13955.

LCM(13940,13955) = 2² × 5¹ × 17¹ × 41¹ × 2791¹
LCM(13940,13955) = 38906540