What is the Least Common Multiple of 21158 and 21163?

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 21158 and 21163 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21158 and 21163, than apply into the LCM equation.

GCF(21158,21163) = 1
LCM(21158,21163) = ( 21158 × 21163) / 1
LCM(21158,21163) = 447766754 / 1
LCM(21158,21163) = 447766754

Least Common Multiple (LCM) of 21158 and 21163 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21158 and 21163. First we will calculate the prime factors of 21158 and 21163.

Prime Factorization of 21158

Prime Factorization of 21163

Now multiplying the highest exponent prime factors to calculate the LCM of 21158 and 21163.

LCM(21158,21163) = 2¹ × 71¹ × 149¹ × 21163¹
LCM(21158,21163) = 447766754