What is the Least Common Multiple of 31205 and 31209?

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 31205 and 31209 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31205 and 31209, than apply into the LCM equation.

GCF(31205,31209) = 1
LCM(31205,31209) = ( 31205 × 31209) / 1
LCM(31205,31209) = 973876845 / 1
LCM(31205,31209) = 973876845

Least Common Multiple (LCM) of 31205 and 31209 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31205 and 31209. First we will calculate the prime factors of 31205 and 31209.

Prime Factorization of 31205

Prime Factorization of 31209

Now multiplying the highest exponent prime factors to calculate the LCM of 31205 and 31209.

LCM(31205,31209) = 5¹ × 79² × 3¹ × 101¹ × 103¹
LCM(31205,31209) = 973876845