What is the Least Common Multiple of 20305 and 20309?

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 20305 and 20309 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20305 and 20309, than apply into the LCM equation.

GCF(20305,20309) = 1
LCM(20305,20309) = ( 20305 × 20309) / 1
LCM(20305,20309) = 412374245 / 1
LCM(20305,20309) = 412374245

Least Common Multiple (LCM) of 20305 and 20309 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20305 and 20309. First we will calculate the prime factors of 20305 and 20309.

Prime Factorization of 20305

Prime Factorization of 20309

Now multiplying the highest exponent prime factors to calculate the LCM of 20305 and 20309.

LCM(20305,20309) = 5¹ × 31¹ × 131¹ × 23¹ × 883¹
LCM(20305,20309) = 412374245