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What is the Least Common Multiple of 1858 and 1862?

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 1858 and 1862 is 1729798.

LCM(1858,1862) = 1729798

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Least Common Multiple of 1858 and 1862 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1858 and 1862, than apply into the LCM equation.

GCF(1858,1862) = 2
LCM(1858,1862) = ( 1858 × 1862) / 2
LCM(1858,1862) = 3459596 / 2
LCM(1858,1862) = 1729798

Least Common Multiple (LCM) of 1858 and 1862 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1858 and 1862. First we will calculate the prime factors of 1858 and 1862.

Prime Factorization of 1858

Prime factors of 1858 are 2, 929. Prime factorization of 1858 in exponential form is:

1858 = 21 × 9291

Prime Factorization of 1862

Prime factors of 1862 are 2, 7, 19. Prime factorization of 1862 in exponential form is:

1862 = 21 × 72 × 191

Now multiplying the highest exponent prime factors to calculate the LCM of 1858 and 1862.

LCM(1858,1862) = 21 × 9291 × 72 × 191
LCM(1858,1862) = 1729798