What is the Least Common Multiple of 20309 and 20321?

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 20309 and 20321 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20309 and 20321, than apply into the LCM equation.

GCF(20309,20321) = 1
LCM(20309,20321) = ( 20309 × 20321) / 1
LCM(20309,20321) = 412699189 / 1
LCM(20309,20321) = 412699189

Least Common Multiple (LCM) of 20309 and 20321 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20309 and 20321. First we will calculate the prime factors of 20309 and 20321.

Prime Factorization of 20309

Prime Factorization of 20321

Now multiplying the highest exponent prime factors to calculate the LCM of 20309 and 20321.

LCM(20309,20321) = 23¹ × 883¹ × 7¹ × 2903¹
LCM(20309,20321) = 412699189