What is the Least Common Multiple of 12989 and 13009?

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 12989 and 13009 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12989 and 13009, than apply into the LCM equation.

GCF(12989,13009) = 1
LCM(12989,13009) = ( 12989 × 13009) / 1
LCM(12989,13009) = 168973901 / 1
LCM(12989,13009) = 168973901

Least Common Multiple (LCM) of 12989 and 13009 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12989 and 13009. First we will calculate the prime factors of 12989 and 13009.

Prime Factorization of 12989

Prime Factorization of 13009

Now multiplying the highest exponent prime factors to calculate the LCM of 12989 and 13009.

LCM(12989,13009) = 31¹ × 419¹ × 13009¹
LCM(12989,13009) = 168973901