What is the Least Common Multiple of 21958 and 21964?

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 21958 and 21964 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21958 and 21964, than apply into the LCM equation.

GCF(21958,21964) = 2
LCM(21958,21964) = ( 21958 × 21964) / 2
LCM(21958,21964) = 482285512 / 2
LCM(21958,21964) = 241142756

Least Common Multiple (LCM) of 21958 and 21964 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21958 and 21964. First we will calculate the prime factors of 21958 and 21964.

Prime Factorization of 21958

Prime Factorization of 21964

Now multiplying the highest exponent prime factors to calculate the LCM of 21958 and 21964.

LCM(21958,21964) = 2² × 10979¹ × 17² × 19¹
LCM(21958,21964) = 241142756