What is the Least Common Multiple of 21673 and 21678?

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 21673 and 21678 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21673 and 21678, than apply into the LCM equation.

GCF(21673,21678) = 1
LCM(21673,21678) = ( 21673 × 21678) / 1
LCM(21673,21678) = 469827294 / 1
LCM(21673,21678) = 469827294

Least Common Multiple (LCM) of 21673 and 21678 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21673 and 21678. First we will calculate the prime factors of 21673 and 21678.

Prime Factorization of 21673

Prime Factorization of 21678

Now multiplying the highest exponent prime factors to calculate the LCM of 21673 and 21678.

LCM(21673,21678) = 21673¹ × 2¹ × 3¹ × 3613¹
LCM(21673,21678) = 469827294