What is the Least Common Multiple of 17740 and 17756?

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 17740 and 17756 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17740 and 17756, than apply into the LCM equation.

GCF(17740,17756) = 4
LCM(17740,17756) = ( 17740 × 17756) / 4
LCM(17740,17756) = 314991440 / 4
LCM(17740,17756) = 78747860

Least Common Multiple (LCM) of 17740 and 17756 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17740 and 17756. First we will calculate the prime factors of 17740 and 17756.

Prime Factorization of 17740

Prime Factorization of 17756

Now multiplying the highest exponent prime factors to calculate the LCM of 17740 and 17756.

LCM(17740,17756) = 2² × 5¹ × 887¹ × 23¹ × 193¹
LCM(17740,17756) = 78747860