What is the Least Common Multiple of 42015 and 42025?

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 42015 and 42025 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42015 and 42025, than apply into the LCM equation.

GCF(42015,42025) = 5
LCM(42015,42025) = ( 42015 × 42025) / 5
LCM(42015,42025) = 1765680375 / 5
LCM(42015,42025) = 353136075

Least Common Multiple (LCM) of 42015 and 42025 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42015 and 42025. First we will calculate the prime factors of 42015 and 42025.

Prime Factorization of 42015

Prime Factorization of 42025

Now multiplying the highest exponent prime factors to calculate the LCM of 42015 and 42025.

LCM(42015,42025) = 3¹ × 5² × 2801¹ × 41²
LCM(42015,42025) = 353136075