What is the Least Common Multiple of 81284 and 81290?

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 81284 and 81290 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81284 and 81290, than apply into the LCM equation.

GCF(81284,81290) = 2
LCM(81284,81290) = ( 81284 × 81290) / 2
LCM(81284,81290) = 6607576360 / 2
LCM(81284,81290) = 3303788180

Least Common Multiple (LCM) of 81284 and 81290 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81284 and 81290. First we will calculate the prime factors of 81284 and 81290.

Prime Factorization of 81284

Prime Factorization of 81290

Now multiplying the highest exponent prime factors to calculate the LCM of 81284 and 81290.

LCM(81284,81290) = 2² × 7¹ × 2903¹ × 5¹ × 11¹ × 739¹
LCM(81284,81290) = 3303788180