What is the Least Common Multiple of 72280 and 72290?

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 72280 and 72290 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72280 and 72290, than apply into the LCM equation.

GCF(72280,72290) = 10
LCM(72280,72290) = ( 72280 × 72290) / 10
LCM(72280,72290) = 5225121200 / 10
LCM(72280,72290) = 522512120

Least Common Multiple (LCM) of 72280 and 72290 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72280 and 72290. First we will calculate the prime factors of 72280 and 72290.

Prime Factorization of 72280

Prime Factorization of 72290

Now multiplying the highest exponent prime factors to calculate the LCM of 72280 and 72290.

LCM(72280,72290) = 2³ × 5¹ × 13¹ × 139¹ × 7229¹
LCM(72280,72290) = 522512120