What is the Least Common Multiple of 19280 and 19290?

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 19280 and 19290 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19280 and 19290, than apply into the LCM equation.

GCF(19280,19290) = 10
LCM(19280,19290) = ( 19280 × 19290) / 10
LCM(19280,19290) = 371911200 / 10
LCM(19280,19290) = 37191120

Least Common Multiple (LCM) of 19280 and 19290 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19280 and 19290. First we will calculate the prime factors of 19280 and 19290.

Prime Factorization of 19280

Prime Factorization of 19290

Now multiplying the highest exponent prime factors to calculate the LCM of 19280 and 19290.

LCM(19280,19290) = 2⁴ × 5¹ × 241¹ × 3¹ × 643¹
LCM(19280,19290) = 37191120