What is the Least Common Multiple of 81530 and 81550?

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 81530 and 81550 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81530 and 81550, than apply into the LCM equation.

GCF(81530,81550) = 10
LCM(81530,81550) = ( 81530 × 81550) / 10
LCM(81530,81550) = 6648771500 / 10
LCM(81530,81550) = 664877150

Least Common Multiple (LCM) of 81530 and 81550 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81530 and 81550. First we will calculate the prime factors of 81530 and 81550.

Prime Factorization of 81530

Prime Factorization of 81550

Now multiplying the highest exponent prime factors to calculate the LCM of 81530 and 81550.

LCM(81530,81550) = 2¹ × 5² × 31¹ × 263¹ × 7¹ × 233¹
LCM(81530,81550) = 664877150