What is the Least Common Multiple of 30405 and 30421?

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 30405 and 30421 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30405 and 30421, than apply into the LCM equation.

GCF(30405,30421) = 1
LCM(30405,30421) = ( 30405 × 30421) / 1
LCM(30405,30421) = 924950505 / 1
LCM(30405,30421) = 924950505

Least Common Multiple (LCM) of 30405 and 30421 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30405 and 30421. First we will calculate the prime factors of 30405 and 30421.

Prime Factorization of 30405

Prime Factorization of 30421

Now multiplying the highest exponent prime factors to calculate the LCM of 30405 and 30421.

LCM(30405,30421) = 3¹ × 5¹ × 2027¹ × 29¹ × 1049¹
LCM(30405,30421) = 924950505