What is the Least Common Multiple of 5781 and 5790?

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 5781 and 5790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 5781 and 5790, than apply into the LCM equation.

GCF(5781,5790) = 3
LCM(5781,5790) = ( 5781 × 5790) / 3
LCM(5781,5790) = 33471990 / 3
LCM(5781,5790) = 11157330

Least Common Multiple (LCM) of 5781 and 5790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 5781 and 5790. First we will calculate the prime factors of 5781 and 5790.

Prime Factorization of 5781

Prime Factorization of 5790

Now multiplying the highest exponent prime factors to calculate the LCM of 5781 and 5790.

LCM(5781,5790) = 3¹ × 41¹ × 47¹ × 2¹ × 5¹ × 193¹
LCM(5781,5790) = 11157330