What is the Least Common Multiple of 21447 and 21462?

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 21447 and 21462 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21447 and 21462, than apply into the LCM equation.

GCF(21447,21462) = 3
LCM(21447,21462) = ( 21447 × 21462) / 3
LCM(21447,21462) = 460295514 / 3
LCM(21447,21462) = 153431838

Least Common Multiple (LCM) of 21447 and 21462 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21447 and 21462. First we will calculate the prime factors of 21447 and 21462.

Prime Factorization of 21447

Prime Factorization of 21462

Now multiplying the highest exponent prime factors to calculate the LCM of 21447 and 21462.

LCM(21447,21462) = 3² × 2383¹ × 2¹ × 7² × 73¹
LCM(21447,21462) = 153431838