What is the Least Common Multiple of 81689 and 81709?

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 81689 and 81709 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81689 and 81709, than apply into the LCM equation.

GCF(81689,81709) = 1
LCM(81689,81709) = ( 81689 × 81709) / 1
LCM(81689,81709) = 6674726501 / 1
LCM(81689,81709) = 6674726501

Least Common Multiple (LCM) of 81689 and 81709 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81689 and 81709. First we will calculate the prime factors of 81689 and 81709.

Prime Factorization of 81689

Prime Factorization of 81709

Now multiplying the highest exponent prime factors to calculate the LCM of 81689 and 81709.

LCM(81689,81709) = 81689¹ × 101¹ × 809¹
LCM(81689,81709) = 6674726501