What is the Least Common Multiple of 19791 and 19811?

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 19791 and 19811 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19791 and 19811, than apply into the LCM equation.

GCF(19791,19811) = 1
LCM(19791,19811) = ( 19791 × 19811) / 1
LCM(19791,19811) = 392079501 / 1
LCM(19791,19811) = 392079501

Least Common Multiple (LCM) of 19791 and 19811 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19791 and 19811. First we will calculate the prime factors of 19791 and 19811.

Prime Factorization of 19791

Prime Factorization of 19811

Now multiplying the highest exponent prime factors to calculate the LCM of 19791 and 19811.

LCM(19791,19811) = 3³ × 733¹ × 11¹ × 1801¹
LCM(19791,19811) = 392079501