What is the Least Common Multiple of 7700 and 7715?

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 7700 and 7715 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7700 and 7715, than apply into the LCM equation.

GCF(7700,7715) = 5
LCM(7700,7715) = ( 7700 × 7715) / 5
LCM(7700,7715) = 59405500 / 5
LCM(7700,7715) = 11881100

Least Common Multiple (LCM) of 7700 and 7715 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7700 and 7715. First we will calculate the prime factors of 7700 and 7715.

Prime Factorization of 7700

Prime Factorization of 7715

Now multiplying the highest exponent prime factors to calculate the LCM of 7700 and 7715.

LCM(7700,7715) = 2² × 5² × 7¹ × 11¹ × 1543¹
LCM(7700,7715) = 11881100