What is the Least Common Multiple of 13821 and 13839?

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 13821 and 13839 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13821 and 13839, than apply into the LCM equation.

GCF(13821,13839) = 3
LCM(13821,13839) = ( 13821 × 13839) / 3
LCM(13821,13839) = 191268819 / 3
LCM(13821,13839) = 63756273

Least Common Multiple (LCM) of 13821 and 13839 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13821 and 13839. First we will calculate the prime factors of 13821 and 13839.

Prime Factorization of 13821

Prime Factorization of 13839

Now multiplying the highest exponent prime factors to calculate the LCM of 13821 and 13839.

LCM(13821,13839) = 3¹ × 17¹ × 271¹ × 7¹ × 659¹
LCM(13821,13839) = 63756273