What is the Least Common Multiple of 19401 and 19421?

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 19401 and 19421 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19401 and 19421, than apply into the LCM equation.

GCF(19401,19421) = 1
LCM(19401,19421) = ( 19401 × 19421) / 1
LCM(19401,19421) = 376786821 / 1
LCM(19401,19421) = 376786821

Least Common Multiple (LCM) of 19401 and 19421 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19401 and 19421. First we will calculate the prime factors of 19401 and 19421.

Prime Factorization of 19401

Prime Factorization of 19421

Now multiplying the highest exponent prime factors to calculate the LCM of 19401 and 19421.

LCM(19401,19421) = 3¹ × 29¹ × 223¹ × 19421¹
LCM(19401,19421) = 376786821