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What is the Least Common Multiple of 6397 and 6401?

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 6397 and 6401 is 40947197.

LCM(6397,6401) = 40947197

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Least Common Multiple of 6397 and 6401 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6397 and 6401, than apply into the LCM equation.

GCF(6397,6401) = 1
LCM(6397,6401) = ( 6397 × 6401) / 1
LCM(6397,6401) = 40947197 / 1
LCM(6397,6401) = 40947197

Least Common Multiple (LCM) of 6397 and 6401 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6397 and 6401. First we will calculate the prime factors of 6397 and 6401.

Prime Factorization of 6397

Prime factors of 6397 are 6397. Prime factorization of 6397 in exponential form is:

6397 = 63971

Prime Factorization of 6401

Prime factors of 6401 are 37, 173. Prime factorization of 6401 in exponential form is:

6401 = 371 × 1731

Now multiplying the highest exponent prime factors to calculate the LCM of 6397 and 6401.

LCM(6397,6401) = 63971 × 371 × 1731
LCM(6397,6401) = 40947197