What is the Least Common Multiple of 87543 and 87561?

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 87543 and 87561 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87543 and 87561, than apply into the LCM equation.

GCF(87543,87561) = 9
LCM(87543,87561) = ( 87543 × 87561) / 9
LCM(87543,87561) = 7665352623 / 9
LCM(87543,87561) = 851705847

Least Common Multiple (LCM) of 87543 and 87561 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87543 and 87561. First we will calculate the prime factors of 87543 and 87561.

Prime Factorization of 87543

Prime Factorization of 87561

Now multiplying the highest exponent prime factors to calculate the LCM of 87543 and 87561.

LCM(87543,87561) = 3⁴ × 71¹ × 137¹ × 23¹ × 47¹
LCM(87543,87561) = 851705847