What is the Least Common Multiple of 49905 and 49920?

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 49905 and 49920 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 49905 and 49920, than apply into the LCM equation.

GCF(49905,49920) = 15
LCM(49905,49920) = ( 49905 × 49920) / 15
LCM(49905,49920) = 2491257600 / 15
LCM(49905,49920) = 166083840

Least Common Multiple (LCM) of 49905 and 49920 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 49905 and 49920. First we will calculate the prime factors of 49905 and 49920.

Prime Factorization of 49905

Prime Factorization of 49920

Now multiplying the highest exponent prime factors to calculate the LCM of 49905 and 49920.

LCM(49905,49920) = 3² × 5¹ × 1109¹ × 2⁸ × 13¹
LCM(49905,49920) = 166083840