What is the Least Common Multiple of 6500 and 6520?

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 6500 and 6520 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6500 and 6520, than apply into the LCM equation.

GCF(6500,6520) = 20
LCM(6500,6520) = ( 6500 × 6520) / 20
LCM(6500,6520) = 42380000 / 20
LCM(6500,6520) = 2119000

Least Common Multiple (LCM) of 6500 and 6520 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6500 and 6520. First we will calculate the prime factors of 6500 and 6520.

Prime Factorization of 6500

Prime Factorization of 6520

Now multiplying the highest exponent prime factors to calculate the LCM of 6500 and 6520.

LCM(6500,6520) = 2³ × 5³ × 13¹ × 163¹
LCM(6500,6520) = 2119000