What is the Least Common Multiple of 79715 and 79720?

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 79715 and 79720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 79715 and 79720, than apply into the LCM equation.

GCF(79715,79720) = 5
LCM(79715,79720) = ( 79715 × 79720) / 5
LCM(79715,79720) = 6354879800 / 5
LCM(79715,79720) = 1270975960

Least Common Multiple (LCM) of 79715 and 79720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 79715 and 79720. First we will calculate the prime factors of 79715 and 79720.

Prime Factorization of 79715

Prime Factorization of 79720

Now multiplying the highest exponent prime factors to calculate the LCM of 79715 and 79720.

LCM(79715,79720) = 5¹ × 107¹ × 149¹ × 2³ × 1993¹
LCM(79715,79720) = 1270975960