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What is the Least Common Multiple of 55785 and 55790?

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 55785 and 55790 is 622449030.

LCM(55785,55790) = 622449030

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Least Common Multiple of 55785 and 55790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 55785 and 55790, than apply into the LCM equation.

GCF(55785,55790) = 5
LCM(55785,55790) = ( 55785 × 55790) / 5
LCM(55785,55790) = 3112245150 / 5
LCM(55785,55790) = 622449030

Least Common Multiple (LCM) of 55785 and 55790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 55785 and 55790. First we will calculate the prime factors of 55785 and 55790.

Prime Factorization of 55785

Prime factors of 55785 are 3, 5, 3719. Prime factorization of 55785 in exponential form is:

55785 = 31 × 51 × 37191

Prime Factorization of 55790

Prime factors of 55790 are 2, 5, 7, 797. Prime factorization of 55790 in exponential form is:

55790 = 21 × 51 × 71 × 7971

Now multiplying the highest exponent prime factors to calculate the LCM of 55785 and 55790.

LCM(55785,55790) = 31 × 51 × 37191 × 21 × 71 × 7971
LCM(55785,55790) = 622449030