What is the Least Common Multiple of 20240 and 20253?

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 20240 and 20253 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20240 and 20253, than apply into the LCM equation.

GCF(20240,20253) = 1
LCM(20240,20253) = ( 20240 × 20253) / 1
LCM(20240,20253) = 409920720 / 1
LCM(20240,20253) = 409920720

Least Common Multiple (LCM) of 20240 and 20253 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20240 and 20253. First we will calculate the prime factors of 20240 and 20253.

Prime Factorization of 20240

Prime Factorization of 20253

Now multiplying the highest exponent prime factors to calculate the LCM of 20240 and 20253.

LCM(20240,20253) = 2⁴ × 5¹ × 11¹ × 23¹ × 3¹ × 43¹ × 157¹
LCM(20240,20253) = 409920720