What is the Least Common Multiple of 21563 and 21571?

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 21563 and 21571 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21563 and 21571, than apply into the LCM equation.

GCF(21563,21571) = 1
LCM(21563,21571) = ( 21563 × 21571) / 1
LCM(21563,21571) = 465135473 / 1
LCM(21563,21571) = 465135473

Least Common Multiple (LCM) of 21563 and 21571 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21563 and 21571. First we will calculate the prime factors of 21563 and 21571.

Prime Factorization of 21563

Prime Factorization of 21571

Now multiplying the highest exponent prime factors to calculate the LCM of 21563 and 21571.

LCM(21563,21571) = 21563¹ × 11¹ × 37¹ × 53¹
LCM(21563,21571) = 465135473