What is the Least Common Multiple of 31780 and 31788?

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 31780 and 31788 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31780 and 31788, than apply into the LCM equation.

GCF(31780,31788) = 4
LCM(31780,31788) = ( 31780 × 31788) / 4
LCM(31780,31788) = 1010222640 / 4
LCM(31780,31788) = 252555660

Least Common Multiple (LCM) of 31780 and 31788 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31780 and 31788. First we will calculate the prime factors of 31780 and 31788.

Prime Factorization of 31780

Prime Factorization of 31788

Now multiplying the highest exponent prime factors to calculate the LCM of 31780 and 31788.

LCM(31780,31788) = 2² × 5¹ × 7¹ × 227¹ × 3² × 883¹
LCM(31780,31788) = 252555660