What is the Least Common Multiple of 7923 and 7938?

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 7923 and 7938 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7923 and 7938, than apply into the LCM equation.

GCF(7923,7938) = 3
LCM(7923,7938) = ( 7923 × 7938) / 3
LCM(7923,7938) = 62892774 / 3
LCM(7923,7938) = 20964258

Least Common Multiple (LCM) of 7923 and 7938 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7923 and 7938. First we will calculate the prime factors of 7923 and 7938.

Prime Factorization of 7923

Prime Factorization of 7938

Now multiplying the highest exponent prime factors to calculate the LCM of 7923 and 7938.

LCM(7923,7938) = 3⁴ × 19¹ × 139¹ × 2¹ × 7²
LCM(7923,7938) = 20964258