What is the Least Common Multiple of 42485 and 42489?

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 42485 and 42489 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42485 and 42489, than apply into the LCM equation.

GCF(42485,42489) = 1
LCM(42485,42489) = ( 42485 × 42489) / 1
LCM(42485,42489) = 1805145165 / 1
LCM(42485,42489) = 1805145165

Least Common Multiple (LCM) of 42485 and 42489 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42485 and 42489. First we will calculate the prime factors of 42485 and 42489.

Prime Factorization of 42485

Prime Factorization of 42489

Now multiplying the highest exponent prime factors to calculate the LCM of 42485 and 42489.

LCM(42485,42489) = 5¹ × 29¹ × 293¹ × 3² × 4721¹
LCM(42485,42489) = 1805145165