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What is the Least Common Multiple of 1808 and 1821?

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 1808 and 1821 is 3292368.

LCM(1808,1821) = 3292368

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Least Common Multiple of 1808 and 1821 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1808 and 1821, than apply into the LCM equation.

GCF(1808,1821) = 1
LCM(1808,1821) = ( 1808 × 1821) / 1
LCM(1808,1821) = 3292368 / 1
LCM(1808,1821) = 3292368

Least Common Multiple (LCM) of 1808 and 1821 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1808 and 1821. First we will calculate the prime factors of 1808 and 1821.

Prime Factorization of 1808

Prime factors of 1808 are 2, 113. Prime factorization of 1808 in exponential form is:

1808 = 24 × 1131

Prime Factorization of 1821

Prime factors of 1821 are 3, 607. Prime factorization of 1821 in exponential form is:

1821 = 31 × 6071

Now multiplying the highest exponent prime factors to calculate the LCM of 1808 and 1821.

LCM(1808,1821) = 24 × 1131 × 31 × 6071
LCM(1808,1821) = 3292368