What is the Least Common Multiple of 28100 and 28105?

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 28100 and 28105 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28100 and 28105, than apply into the LCM equation.

GCF(28100,28105) = 5
LCM(28100,28105) = ( 28100 × 28105) / 5
LCM(28100,28105) = 789750500 / 5
LCM(28100,28105) = 157950100

Least Common Multiple (LCM) of 28100 and 28105 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28100 and 28105. First we will calculate the prime factors of 28100 and 28105.

Prime Factorization of 28100

Prime Factorization of 28105

Now multiplying the highest exponent prime factors to calculate the LCM of 28100 and 28105.

LCM(28100,28105) = 2² × 5² × 281¹ × 7¹ × 11¹ × 73¹
LCM(28100,28105) = 157950100