What is the Least Common Multiple of 42040 and 42045?

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 42040 and 42045 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42040 and 42045, than apply into the LCM equation.

GCF(42040,42045) = 5
LCM(42040,42045) = ( 42040 × 42045) / 5
LCM(42040,42045) = 1767571800 / 5
LCM(42040,42045) = 353514360

Least Common Multiple (LCM) of 42040 and 42045 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42040 and 42045. First we will calculate the prime factors of 42040 and 42045.

Prime Factorization of 42040

Prime Factorization of 42045

Now multiplying the highest exponent prime factors to calculate the LCM of 42040 and 42045.

LCM(42040,42045) = 2³ × 5¹ × 1051¹ × 3¹ × 2803¹
LCM(42040,42045) = 353514360