What is the Least Common Multiple of 91561 and 91581?

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 91561 and 91581 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91561 and 91581, than apply into the LCM equation.

GCF(91561,91581) = 1
LCM(91561,91581) = ( 91561 × 91581) / 1
LCM(91561,91581) = 8385247941 / 1
LCM(91561,91581) = 8385247941

Least Common Multiple (LCM) of 91561 and 91581 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91561 and 91581. First we will calculate the prime factors of 91561 and 91581.

Prime Factorization of 91561

Prime Factorization of 91581

Now multiplying the highest exponent prime factors to calculate the LCM of 91561 and 91581.

LCM(91561,91581) = 19¹ × 61¹ × 79¹ × 3¹ × 7³ × 89¹
LCM(91561,91581) = 8385247941