What is the Least Common Multiple of 8905 and 8920?

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 8905 and 8920 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8905 and 8920, than apply into the LCM equation.

GCF(8905,8920) = 5
LCM(8905,8920) = ( 8905 × 8920) / 5
LCM(8905,8920) = 79432600 / 5
LCM(8905,8920) = 15886520

Least Common Multiple (LCM) of 8905 and 8920 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 8905 and 8920. First we will calculate the prime factors of 8905 and 8920.

Prime Factorization of 8905

Prime Factorization of 8920

Now multiplying the highest exponent prime factors to calculate the LCM of 8905 and 8920.

LCM(8905,8920) = 5¹ × 13¹ × 137¹ × 2³ × 223¹
LCM(8905,8920) = 15886520