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What is the Least Common Multiple of 1423 and 1438?

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 1423 and 1438 is 2046274.

LCM(1423,1438) = 2046274

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Least Common Multiple of 1423 and 1438 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1423 and 1438, than apply into the LCM equation.

GCF(1423,1438) = 1
LCM(1423,1438) = ( 1423 × 1438) / 1
LCM(1423,1438) = 2046274 / 1
LCM(1423,1438) = 2046274

Least Common Multiple (LCM) of 1423 and 1438 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1423 and 1438. First we will calculate the prime factors of 1423 and 1438.

Prime Factorization of 1423

Prime factors of 1423 are 1423. Prime factorization of 1423 in exponential form is:

1423 = 14231

Prime Factorization of 1438

Prime factors of 1438 are 2, 719. Prime factorization of 1438 in exponential form is:

1438 = 21 × 7191

Now multiplying the highest exponent prime factors to calculate the LCM of 1423 and 1438.

LCM(1423,1438) = 14231 × 21 × 7191
LCM(1423,1438) = 2046274