What is the Least Common Multiple of 40489 and 40509?

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 40489 and 40509 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40489 and 40509, than apply into the LCM equation.

GCF(40489,40509) = 1
LCM(40489,40509) = ( 40489 × 40509) / 1
LCM(40489,40509) = 1640168901 / 1
LCM(40489,40509) = 1640168901

Least Common Multiple (LCM) of 40489 and 40509 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40489 and 40509. First we will calculate the prime factors of 40489 and 40509.

Prime Factorization of 40489

Prime Factorization of 40509

Now multiplying the highest exponent prime factors to calculate the LCM of 40489 and 40509.

LCM(40489,40509) = 19¹ × 2131¹ × 3² × 7¹ × 643¹
LCM(40489,40509) = 1640168901