What is the Least Common Multiple of 12270 and 12290?

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 12270 and 12290 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12270 and 12290, than apply into the LCM equation.

GCF(12270,12290) = 10
LCM(12270,12290) = ( 12270 × 12290) / 10
LCM(12270,12290) = 150798300 / 10
LCM(12270,12290) = 15079830

Least Common Multiple (LCM) of 12270 and 12290 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12270 and 12290. First we will calculate the prime factors of 12270 and 12290.

Prime Factorization of 12270

Prime Factorization of 12290

Now multiplying the highest exponent prime factors to calculate the LCM of 12270 and 12290.

LCM(12270,12290) = 2¹ × 3¹ × 5¹ × 409¹ × 1229¹
LCM(12270,12290) = 15079830