What is the Least Common Multiple of 42516 and 42520?

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 42516 and 42520 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42516 and 42520, than apply into the LCM equation.

GCF(42516,42520) = 4
LCM(42516,42520) = ( 42516 × 42520) / 4
LCM(42516,42520) = 1807780320 / 4
LCM(42516,42520) = 451945080

Least Common Multiple (LCM) of 42516 and 42520 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42516 and 42520. First we will calculate the prime factors of 42516 and 42520.

Prime Factorization of 42516

Prime Factorization of 42520

Now multiplying the highest exponent prime factors to calculate the LCM of 42516 and 42520.

LCM(42516,42520) = 2³ × 3² × 1181¹ × 5¹ × 1063¹
LCM(42516,42520) = 451945080