What is the Least Common Multiple of 17909 and 17921?

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 17909 and 17921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17909 and 17921, than apply into the LCM equation.

GCF(17909,17921) = 1
LCM(17909,17921) = ( 17909 × 17921) / 1
LCM(17909,17921) = 320947189 / 1
LCM(17909,17921) = 320947189

Least Common Multiple (LCM) of 17909 and 17921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17909 and 17921. First we will calculate the prime factors of 17909 and 17921.

Prime Factorization of 17909

Prime Factorization of 17921

Now multiplying the highest exponent prime factors to calculate the LCM of 17909 and 17921.

LCM(17909,17921) = 17909¹ × 17921¹
LCM(17909,17921) = 320947189