What is the Least Common Multiple of 1609 and 1613?

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 1609 and 1613 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1609 and 1613, than apply into the LCM equation.

GCF(1609,1613) = 1
LCM(1609,1613) = ( 1609 × 1613) / 1
LCM(1609,1613) = 2595317 / 1
LCM(1609,1613) = 2595317

Least Common Multiple (LCM) of 1609 and 1613 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1609 and 1613. First we will calculate the prime factors of 1609 and 1613.

Prime Factorization of 1609

Prime Factorization of 1613

Now multiplying the highest exponent prime factors to calculate the LCM of 1609 and 1613.

LCM(1609,1613) = 1609¹ × 1613¹
LCM(1609,1613) = 2595317