What is the Least Common Multiple of 81457 and 81473?

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 81457 and 81473 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81457 and 81473, than apply into the LCM equation.

GCF(81457,81473) = 1
LCM(81457,81473) = ( 81457 × 81473) / 1
LCM(81457,81473) = 6636546161 / 1
LCM(81457,81473) = 6636546161

Least Common Multiple (LCM) of 81457 and 81473 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81457 and 81473. First we will calculate the prime factors of 81457 and 81473.

Prime Factorization of 81457

Prime Factorization of 81473

Now multiplying the highest exponent prime factors to calculate the LCM of 81457 and 81473.

LCM(81457,81473) = 81457¹ × 7¹ × 103¹ × 113¹
LCM(81457,81473) = 6636546161