What is the Least Common Multiple of 11891 and 11909?

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 11891 and 11909 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11891 and 11909, than apply into the LCM equation.

GCF(11891,11909) = 1
LCM(11891,11909) = ( 11891 × 11909) / 1
LCM(11891,11909) = 141609919 / 1
LCM(11891,11909) = 141609919

Least Common Multiple (LCM) of 11891 and 11909 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11891 and 11909. First we will calculate the prime factors of 11891 and 11909.

Prime Factorization of 11891

Prime Factorization of 11909

Now multiplying the highest exponent prime factors to calculate the LCM of 11891 and 11909.

LCM(11891,11909) = 11¹ × 23¹ × 47¹ × 11909¹
LCM(11891,11909) = 141609919