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What is the Least Common Multiple of 6406 and 6416?

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 6406 and 6416 is 20550448.

LCM(6406,6416) = 20550448

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Least Common Multiple of 6406 and 6416 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6406 and 6416, than apply into the LCM equation.

GCF(6406,6416) = 2
LCM(6406,6416) = ( 6406 × 6416) / 2
LCM(6406,6416) = 41100896 / 2
LCM(6406,6416) = 20550448

Least Common Multiple (LCM) of 6406 and 6416 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6406 and 6416. First we will calculate the prime factors of 6406 and 6416.

Prime Factorization of 6406

Prime factors of 6406 are 2, 3203. Prime factorization of 6406 in exponential form is:

6406 = 21 × 32031

Prime Factorization of 6416

Prime factors of 6416 are 2, 401. Prime factorization of 6416 in exponential form is:

6416 = 24 × 4011

Now multiplying the highest exponent prime factors to calculate the LCM of 6406 and 6416.

LCM(6406,6416) = 24 × 32031 × 4011
LCM(6406,6416) = 20550448