What is the Least Common Multiple of 15800 and 15820?

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 15800 and 15820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15800 and 15820, than apply into the LCM equation.

GCF(15800,15820) = 20
LCM(15800,15820) = ( 15800 × 15820) / 20
LCM(15800,15820) = 249956000 / 20
LCM(15800,15820) = 12497800

Least Common Multiple (LCM) of 15800 and 15820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15800 and 15820. First we will calculate the prime factors of 15800 and 15820.

Prime Factorization of 15800

Prime Factorization of 15820

Now multiplying the highest exponent prime factors to calculate the LCM of 15800 and 15820.

LCM(15800,15820) = 2³ × 5² × 79¹ × 7¹ × 113¹
LCM(15800,15820) = 12497800