What is the Least Common Multiple of 55780 and 55790?

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 55780 and 55790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 55780 and 55790, than apply into the LCM equation.

GCF(55780,55790) = 10
LCM(55780,55790) = ( 55780 × 55790) / 10
LCM(55780,55790) = 3111966200 / 10
LCM(55780,55790) = 311196620

Least Common Multiple (LCM) of 55780 and 55790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 55780 and 55790. First we will calculate the prime factors of 55780 and 55790.

Prime Factorization of 55780

Prime Factorization of 55790

Now multiplying the highest exponent prime factors to calculate the LCM of 55780 and 55790.

LCM(55780,55790) = 2² × 5¹ × 2789¹ × 7¹ × 797¹
LCM(55780,55790) = 311196620