What is the Least Common Multiple of 77900 and 77905?

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 77900 and 77905 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 77900 and 77905, than apply into the LCM equation.

GCF(77900,77905) = 5
LCM(77900,77905) = ( 77900 × 77905) / 5
LCM(77900,77905) = 6068799500 / 5
LCM(77900,77905) = 1213759900

Least Common Multiple (LCM) of 77900 and 77905 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 77900 and 77905. First we will calculate the prime factors of 77900 and 77905.

Prime Factorization of 77900

Prime Factorization of 77905

Now multiplying the highest exponent prime factors to calculate the LCM of 77900 and 77905.

LCM(77900,77905) = 2² × 5² × 19¹ × 41¹ × 15581¹
LCM(77900,77905) = 1213759900