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What is the Least Common Multiple of 6401 and 6415?

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 6401 and 6415 is 41062415.

LCM(6401,6415) = 41062415

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Least Common Multiple of 6401 and 6415 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6401 and 6415, than apply into the LCM equation.

GCF(6401,6415) = 1
LCM(6401,6415) = ( 6401 × 6415) / 1
LCM(6401,6415) = 41062415 / 1
LCM(6401,6415) = 41062415

Least Common Multiple (LCM) of 6401 and 6415 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6401 and 6415. First we will calculate the prime factors of 6401 and 6415.

Prime Factorization of 6401

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

6401 = 371 × 1731

Prime Factorization of 6415

Prime factors of 6415 are 5, 1283. Prime factorization of 6415 in exponential form is:

6415 = 51 × 12831

Now multiplying the highest exponent prime factors to calculate the LCM of 6401 and 6415.

LCM(6401,6415) = 371 × 1731 × 51 × 12831
LCM(6401,6415) = 41062415