What is the Least Common Multiple of 13781 and 13790?

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 13781 and 13790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13781 and 13790, than apply into the LCM equation.

GCF(13781,13790) = 1
LCM(13781,13790) = ( 13781 × 13790) / 1
LCM(13781,13790) = 190039990 / 1
LCM(13781,13790) = 190039990

Least Common Multiple (LCM) of 13781 and 13790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13781 and 13790. First we will calculate the prime factors of 13781 and 13790.

Prime Factorization of 13781

Prime Factorization of 13790

Now multiplying the highest exponent prime factors to calculate the LCM of 13781 and 13790.

LCM(13781,13790) = 13781¹ × 2¹ × 5¹ × 7¹ × 197¹
LCM(13781,13790) = 190039990