What is the Least Common Multiple of 42489 and 42503?

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 42489 and 42503 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42489 and 42503, than apply into the LCM equation.

GCF(42489,42503) = 1
LCM(42489,42503) = ( 42489 × 42503) / 1
LCM(42489,42503) = 1805909967 / 1
LCM(42489,42503) = 1805909967

Least Common Multiple (LCM) of 42489 and 42503 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42489 and 42503. First we will calculate the prime factors of 42489 and 42503.

Prime Factorization of 42489

Prime Factorization of 42503

Now multiplying the highest exponent prime factors to calculate the LCM of 42489 and 42503.

LCM(42489,42503) = 3² × 4721¹ × 19¹ × 2237¹
LCM(42489,42503) = 1805909967