What is the Least Common Multiple of 13909 and 13921?

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 13909 and 13921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13909 and 13921, than apply into the LCM equation.

GCF(13909,13921) = 1
LCM(13909,13921) = ( 13909 × 13921) / 1
LCM(13909,13921) = 193627189 / 1
LCM(13909,13921) = 193627189

Least Common Multiple (LCM) of 13909 and 13921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13909 and 13921. First we will calculate the prime factors of 13909 and 13921.

Prime Factorization of 13909

Prime Factorization of 13921

Now multiplying the highest exponent prime factors to calculate the LCM of 13909 and 13921.

LCM(13909,13921) = 7¹ × 1987¹ × 13921¹
LCM(13909,13921) = 193627189