What is the Least Common Multiple of 21242 and 21256?

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 21242 and 21256 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21242 and 21256, than apply into the LCM equation.

GCF(21242,21256) = 2
LCM(21242,21256) = ( 21242 × 21256) / 2
LCM(21242,21256) = 451519952 / 2
LCM(21242,21256) = 225759976

Least Common Multiple (LCM) of 21242 and 21256 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21242 and 21256. First we will calculate the prime factors of 21242 and 21256.

Prime Factorization of 21242

Prime Factorization of 21256

Now multiplying the highest exponent prime factors to calculate the LCM of 21242 and 21256.

LCM(21242,21256) = 2³ × 13¹ × 19¹ × 43¹ × 2657¹
LCM(21242,21256) = 225759976