What is the Least Common Multiple of 21155 and 21159?

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 21155 and 21159 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21155 and 21159, than apply into the LCM equation.

GCF(21155,21159) = 1
LCM(21155,21159) = ( 21155 × 21159) / 1
LCM(21155,21159) = 447618645 / 1
LCM(21155,21159) = 447618645

Least Common Multiple (LCM) of 21155 and 21159 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21155 and 21159. First we will calculate the prime factors of 21155 and 21159.

Prime Factorization of 21155

Prime Factorization of 21159

Now multiplying the highest exponent prime factors to calculate the LCM of 21155 and 21159.

LCM(21155,21159) = 5¹ × 4231¹ × 3² × 2351¹
LCM(21155,21159) = 447618645