What is the Least Common Multiple of 71561 and 71581?

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 71561 and 71581 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71561 and 71581, than apply into the LCM equation.

GCF(71561,71581) = 1
LCM(71561,71581) = ( 71561 × 71581) / 1
LCM(71561,71581) = 5122407941 / 1
LCM(71561,71581) = 5122407941

Least Common Multiple (LCM) of 71561 and 71581 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71561 and 71581. First we will calculate the prime factors of 71561 and 71581.

Prime Factorization of 71561

Prime Factorization of 71581

Now multiplying the highest exponent prime factors to calculate the LCM of 71561 and 71581.

LCM(71561,71581) = 7¹ × 10223¹ × 47¹ × 1523¹
LCM(71561,71581) = 5122407941