What is the Least Common Multiple of 20243 and 20247?

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 20243 and 20247 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20243 and 20247, than apply into the LCM equation.

GCF(20243,20247) = 1
LCM(20243,20247) = ( 20243 × 20247) / 1
LCM(20243,20247) = 409860021 / 1
LCM(20243,20247) = 409860021

Least Common Multiple (LCM) of 20243 and 20247 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20243 and 20247. First we will calculate the prime factors of 20243 and 20247.

Prime Factorization of 20243

Prime Factorization of 20247

Now multiplying the highest exponent prime factors to calculate the LCM of 20243 and 20247.

LCM(20243,20247) = 31¹ × 653¹ × 3¹ × 17¹ × 397¹
LCM(20243,20247) = 409860021