What is the Least Common Multiple of 17605 and 17620?

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 17605 and 17620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17605 and 17620, than apply into the LCM equation.

GCF(17605,17620) = 5
LCM(17605,17620) = ( 17605 × 17620) / 5
LCM(17605,17620) = 310200100 / 5
LCM(17605,17620) = 62040020

Least Common Multiple (LCM) of 17605 and 17620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17605 and 17620. First we will calculate the prime factors of 17605 and 17620.

Prime Factorization of 17605

Prime Factorization of 17620

Now multiplying the highest exponent prime factors to calculate the LCM of 17605 and 17620.

LCM(17605,17620) = 5¹ × 7¹ × 503¹ × 2² × 881¹
LCM(17605,17620) = 62040020