What is the Least Common Multiple of 71491 and 71509?

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 71491 and 71509 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71491 and 71509, than apply into the LCM equation.

GCF(71491,71509) = 1
LCM(71491,71509) = ( 71491 × 71509) / 1
LCM(71491,71509) = 5112249919 / 1
LCM(71491,71509) = 5112249919

Least Common Multiple (LCM) of 71491 and 71509 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71491 and 71509. First we will calculate the prime factors of 71491 and 71509.

Prime Factorization of 71491

Prime Factorization of 71509

Now multiplying the highest exponent prime factors to calculate the LCM of 71491 and 71509.

LCM(71491,71509) = 7² × 1459¹ × 43¹ × 1663¹
LCM(71491,71509) = 5112249919