What is the Least Common Multiple of 21355 and 21373?

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 21355 and 21373 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21355 and 21373, than apply into the LCM equation.

GCF(21355,21373) = 1
LCM(21355,21373) = ( 21355 × 21373) / 1
LCM(21355,21373) = 456420415 / 1
LCM(21355,21373) = 456420415

Least Common Multiple (LCM) of 21355 and 21373 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21355 and 21373. First we will calculate the prime factors of 21355 and 21373.

Prime Factorization of 21355

Prime Factorization of 21373

Now multiplying the highest exponent prime factors to calculate the LCM of 21355 and 21373.

LCM(21355,21373) = 5¹ × 4271¹ × 11¹ × 29¹ × 67¹
LCM(21355,21373) = 456420415