What is the Least Common Multiple of 81470 and 81487?

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 81470 and 81487 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81470 and 81487, than apply into the LCM equation.

GCF(81470,81487) = 1
LCM(81470,81487) = ( 81470 × 81487) / 1
LCM(81470,81487) = 6638745890 / 1
LCM(81470,81487) = 6638745890

Least Common Multiple (LCM) of 81470 and 81487 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81470 and 81487. First we will calculate the prime factors of 81470 and 81487.

Prime Factorization of 81470

Prime Factorization of 81487

Now multiplying the highest exponent prime factors to calculate the LCM of 81470 and 81487.

LCM(81470,81487) = 2¹ × 5¹ × 8147¹ × 7² × 1663¹
LCM(81470,81487) = 6638745890