What is the Least Common Multiple of 21218 and 21237?

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 21218 and 21237 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21218 and 21237, than apply into the LCM equation.

GCF(21218,21237) = 1
LCM(21218,21237) = ( 21218 × 21237) / 1
LCM(21218,21237) = 450606666 / 1
LCM(21218,21237) = 450606666

Least Common Multiple (LCM) of 21218 and 21237 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21218 and 21237. First we will calculate the prime factors of 21218 and 21237.

Prime Factorization of 21218

Prime Factorization of 21237

Now multiplying the highest exponent prime factors to calculate the LCM of 21218 and 21237.

LCM(21218,21237) = 2¹ × 103² × 3¹ × 7079¹
LCM(21218,21237) = 450606666