What is the Least Common Multiple of 78800 and 78812?

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 78800 and 78812 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78800 and 78812, than apply into the LCM equation.

GCF(78800,78812) = 4
LCM(78800,78812) = ( 78800 × 78812) / 4
LCM(78800,78812) = 6210385600 / 4
LCM(78800,78812) = 1552596400

Least Common Multiple (LCM) of 78800 and 78812 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78800 and 78812. First we will calculate the prime factors of 78800 and 78812.

Prime Factorization of 78800

Prime Factorization of 78812

Now multiplying the highest exponent prime factors to calculate the LCM of 78800 and 78812.

LCM(78800,78812) = 2⁴ × 5² × 197¹ × 17¹ × 19¹ × 61¹
LCM(78800,78812) = 1552596400