What is the Least Common Multiple of 81492 and 81509?

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 81492 and 81509 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81492 and 81509, than apply into the LCM equation.

GCF(81492,81509) = 1
LCM(81492,81509) = ( 81492 × 81509) / 1
LCM(81492,81509) = 6642331428 / 1
LCM(81492,81509) = 6642331428

Least Common Multiple (LCM) of 81492 and 81509 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81492 and 81509. First we will calculate the prime factors of 81492 and 81509.

Prime Factorization of 81492

Prime Factorization of 81509

Now multiplying the highest exponent prime factors to calculate the LCM of 81492 and 81509.

LCM(81492,81509) = 2² × 3¹ × 6791¹ × 81509¹
LCM(81492,81509) = 6642331428