What is the Least Common Multiple of 13781 and 13789?

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 13789 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 13789, than apply into the LCM equation.

GCF(13781,13789) = 1
LCM(13781,13789) = ( 13781 × 13789) / 1
LCM(13781,13789) = 190026209 / 1
LCM(13781,13789) = 190026209

Least Common Multiple (LCM) of 13781 and 13789 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13781 and 13789. First we will calculate the prime factors of 13781 and 13789.

Prime Factorization of 13781

Prime Factorization of 13789

Now multiplying the highest exponent prime factors to calculate the LCM of 13781 and 13789.

LCM(13781,13789) = 13781¹ × 13789¹
LCM(13781,13789) = 190026209