What is the Least Common Multiple of 76780 and 76790?

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 76780 and 76790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 76780 and 76790, than apply into the LCM equation.

GCF(76780,76790) = 10
LCM(76780,76790) = ( 76780 × 76790) / 10
LCM(76780,76790) = 5895936200 / 10
LCM(76780,76790) = 589593620

Least Common Multiple (LCM) of 76780 and 76790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 76780 and 76790. First we will calculate the prime factors of 76780 and 76790.

Prime Factorization of 76780

Prime Factorization of 76790

Now multiplying the highest exponent prime factors to calculate the LCM of 76780 and 76790.

LCM(76780,76790) = 2² × 5¹ × 11¹ × 349¹ × 7¹ × 1097¹
LCM(76780,76790) = 589593620