What is the Least Common Multiple of 791 and 811?

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 791 and 811 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 791 and 811, than apply into the LCM equation.

GCF(791,811) = 1
LCM(791,811) = ( 791 × 811) / 1
LCM(791,811) = 641501 / 1
LCM(791,811) = 641501

Least Common Multiple (LCM) of 791 and 811 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 791 and 811. First we will calculate the prime factors of 791 and 811.

Prime Factorization of 791

Prime Factorization of 811

Now multiplying the highest exponent prime factors to calculate the LCM of 791 and 811.

LCM(791,811) = 7¹ × 113¹ × 811¹
LCM(791,811) = 641501