What is the Least Common Multiple of 21787 and 21803?

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 21787 and 21803 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21787 and 21803, than apply into the LCM equation.

GCF(21787,21803) = 1
LCM(21787,21803) = ( 21787 × 21803) / 1
LCM(21787,21803) = 475021961 / 1
LCM(21787,21803) = 475021961

Least Common Multiple (LCM) of 21787 and 21803 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21787 and 21803. First we will calculate the prime factors of 21787 and 21803.

Prime Factorization of 21787

Prime Factorization of 21803

Now multiplying the highest exponent prime factors to calculate the LCM of 21787 and 21803.

LCM(21787,21803) = 21787¹ × 21803¹
LCM(21787,21803) = 475021961