What is the Least Common Multiple of 21328 and 21347?

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 21328 and 21347 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21328 and 21347, than apply into the LCM equation.

GCF(21328,21347) = 1
LCM(21328,21347) = ( 21328 × 21347) / 1
LCM(21328,21347) = 455288816 / 1
LCM(21328,21347) = 455288816

Least Common Multiple (LCM) of 21328 and 21347 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21328 and 21347. First we will calculate the prime factors of 21328 and 21347.

Prime Factorization of 21328

Prime Factorization of 21347

Now multiplying the highest exponent prime factors to calculate the LCM of 21328 and 21347.

LCM(21328,21347) = 2⁴ × 31¹ × 43¹ × 21347¹
LCM(21328,21347) = 455288816