What is the Least Common Multiple of 47420 and 47438?

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 47420 and 47438 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 47420 and 47438, than apply into the LCM equation.

GCF(47420,47438) = 2
LCM(47420,47438) = ( 47420 × 47438) / 2
LCM(47420,47438) = 2249509960 / 2
LCM(47420,47438) = 1124754980

Least Common Multiple (LCM) of 47420 and 47438 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 47420 and 47438. First we will calculate the prime factors of 47420 and 47438.

Prime Factorization of 47420

Prime Factorization of 47438

Now multiplying the highest exponent prime factors to calculate the LCM of 47420 and 47438.

LCM(47420,47438) = 2² × 5¹ × 2371¹ × 23719¹
LCM(47420,47438) = 1124754980