What is the Least Common Multiple of 21139 and 21154?

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 21139 and 21154 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21139 and 21154, than apply into the LCM equation.

GCF(21139,21154) = 1
LCM(21139,21154) = ( 21139 × 21154) / 1
LCM(21139,21154) = 447174406 / 1
LCM(21139,21154) = 447174406

Least Common Multiple (LCM) of 21139 and 21154 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21139 and 21154. First we will calculate the prime factors of 21139 and 21154.

Prime Factorization of 21139

Prime Factorization of 21154

Now multiplying the highest exponent prime factors to calculate the LCM of 21139 and 21154.

LCM(21139,21154) = 21139¹ × 2¹ × 7¹ × 1511¹
LCM(21139,21154) = 447174406