What is the Least Common Multiple of 21023 and 21043?

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 21023 and 21043 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21023 and 21043, than apply into the LCM equation.

GCF(21023,21043) = 1
LCM(21023,21043) = ( 21023 × 21043) / 1
LCM(21023,21043) = 442386989 / 1
LCM(21023,21043) = 442386989

Least Common Multiple (LCM) of 21023 and 21043 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21023 and 21043. First we will calculate the prime factors of 21023 and 21043.

Prime Factorization of 21023

Prime Factorization of 21043

Now multiplying the highest exponent prime factors to calculate the LCM of 21023 and 21043.

LCM(21023,21043) = 21023¹ × 11¹ × 1913¹
LCM(21023,21043) = 442386989