What is the Least Common Multiple of 1872 and 1880?

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 1872 and 1880 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1872 and 1880, than apply into the LCM equation.

GCF(1872,1880) = 8
LCM(1872,1880) = ( 1872 × 1880) / 8
LCM(1872,1880) = 3519360 / 8
LCM(1872,1880) = 439920

Least Common Multiple (LCM) of 1872 and 1880 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1872 and 1880. First we will calculate the prime factors of 1872 and 1880.

Prime Factorization of 1872

Prime Factorization of 1880

Now multiplying the highest exponent prime factors to calculate the LCM of 1872 and 1880.

LCM(1872,1880) = 2⁴ × 3² × 13¹ × 5¹ × 47¹
LCM(1872,1880) = 439920