What is the Least Common Multiple of 42040 and 42046?

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 42046 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 42046, than apply into the LCM equation.

GCF(42040,42046) = 2
LCM(42040,42046) = ( 42040 × 42046) / 2
LCM(42040,42046) = 1767613840 / 2
LCM(42040,42046) = 883806920

Least Common Multiple (LCM) of 42040 and 42046 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42040 and 42046. First we will calculate the prime factors of 42040 and 42046.

Prime Factorization of 42040

Prime Factorization of 42046

Now multiplying the highest exponent prime factors to calculate the LCM of 42040 and 42046.

LCM(42040,42046) = 2³ × 5¹ × 1051¹ × 21023¹
LCM(42040,42046) = 883806920