What is the Least Common Multiple of 28405 and 28412?

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 28405 and 28412 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28405 and 28412, than apply into the LCM equation.

GCF(28405,28412) = 1
LCM(28405,28412) = ( 28405 × 28412) / 1
LCM(28405,28412) = 807042860 / 1
LCM(28405,28412) = 807042860

Least Common Multiple (LCM) of 28405 and 28412 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28405 and 28412. First we will calculate the prime factors of 28405 and 28412.

Prime Factorization of 28405

Prime Factorization of 28412

Now multiplying the highest exponent prime factors to calculate the LCM of 28405 and 28412.

LCM(28405,28412) = 5¹ × 13¹ × 19¹ × 23¹ × 2² × 7103¹
LCM(28405,28412) = 807042860