GCF and LCM Calculator Logo

What is the Least Common Multiple of 18421 and 18431?

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 (LCM) of 18421 and 18431 is 339517451.

LCM(18421,18431) = 339517451

LCM Calculator and
and

Least Common Multiple of 18421 and 18431 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18421 and 18431, than apply into the LCM equation.

GCF(18421,18431) = 1
LCM(18421,18431) = ( 18421 × 18431) / 1
LCM(18421,18431) = 339517451 / 1
LCM(18421,18431) = 339517451

Least Common Multiple (LCM) of 18421 and 18431 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18421 and 18431. First we will calculate the prime factors of 18421 and 18431.

Prime Factorization of 18421

Prime factors of 18421 are 13, 109. Prime factorization of 18421 in exponential form is:

18421 = 132 × 1091

Prime Factorization of 18431

Prime factors of 18431 are 7, 2633. Prime factorization of 18431 in exponential form is:

18431 = 71 × 26331

Now multiplying the highest exponent prime factors to calculate the LCM of 18421 and 18431.

LCM(18421,18431) = 132 × 1091 × 71 × 26331
LCM(18421,18431) = 339517451