What is the Least Common Multiple of 81260 and 81268?

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 81260 and 81268 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81260 and 81268, than apply into the LCM equation.

GCF(81260,81268) = 4
LCM(81260,81268) = ( 81260 × 81268) / 4
LCM(81260,81268) = 6603837680 / 4
LCM(81260,81268) = 1650959420

Least Common Multiple (LCM) of 81260 and 81268 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81260 and 81268. First we will calculate the prime factors of 81260 and 81268.

Prime Factorization of 81260

Prime Factorization of 81268

Now multiplying the highest exponent prime factors to calculate the LCM of 81260 and 81268.

LCM(81260,81268) = 2² × 5¹ × 17¹ × 239¹ × 11¹ × 1847¹
LCM(81260,81268) = 1650959420