What is the Least Common Multiple of 81758 and 81770?

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 81758 and 81770 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81758 and 81770, than apply into the LCM equation.

GCF(81758,81770) = 2
LCM(81758,81770) = ( 81758 × 81770) / 2
LCM(81758,81770) = 6685351660 / 2
LCM(81758,81770) = 3342675830

Least Common Multiple (LCM) of 81758 and 81770 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81758 and 81770. First we will calculate the prime factors of 81758 and 81770.

Prime Factorization of 81758

Prime Factorization of 81770

Now multiplying the highest exponent prime factors to calculate the LCM of 81758 and 81770.

LCM(81758,81770) = 2¹ × 40879¹ × 5¹ × 13¹ × 17¹ × 37¹
LCM(81758,81770) = 3342675830