What is the Least Common Multiple of 76781 and 76789?

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 76781 and 76789 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 76781 and 76789, than apply into the LCM equation.

GCF(76781,76789) = 1
LCM(76781,76789) = ( 76781 × 76789) / 1
LCM(76781,76789) = 5895936209 / 1
LCM(76781,76789) = 5895936209

Least Common Multiple (LCM) of 76781 and 76789 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 76781 and 76789. First we will calculate the prime factors of 76781 and 76789.

Prime Factorization of 76781

Prime Factorization of 76789

Now multiplying the highest exponent prime factors to calculate the LCM of 76781 and 76789.

LCM(76781,76789) = 76781¹ × 17¹ × 4517¹
LCM(76781,76789) = 5895936209