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What is the Least Common Multiple of 6421 and 6436?

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 6421 and 6436 is 41325556.

LCM(6421,6436) = 41325556

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Least Common Multiple of 6421 and 6436 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6421 and 6436, than apply into the LCM equation.

GCF(6421,6436) = 1
LCM(6421,6436) = ( 6421 × 6436) / 1
LCM(6421,6436) = 41325556 / 1
LCM(6421,6436) = 41325556

Least Common Multiple (LCM) of 6421 and 6436 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6421 and 6436. First we will calculate the prime factors of 6421 and 6436.

Prime Factorization of 6421

Prime factors of 6421 are 6421. Prime factorization of 6421 in exponential form is:

6421 = 64211

Prime Factorization of 6436

Prime factors of 6436 are 2, 1609. Prime factorization of 6436 in exponential form is:

6436 = 22 × 16091

Now multiplying the highest exponent prime factors to calculate the LCM of 6421 and 6436.

LCM(6421,6436) = 64211 × 22 × 16091
LCM(6421,6436) = 41325556