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What is the Least Common Multiple of 6574 and 6580?

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 6574 and 6580 is 21628460.

LCM(6574,6580) = 21628460

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Least Common Multiple of 6574 and 6580 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6574 and 6580, than apply into the LCM equation.

GCF(6574,6580) = 2
LCM(6574,6580) = ( 6574 × 6580) / 2
LCM(6574,6580) = 43256920 / 2
LCM(6574,6580) = 21628460

Least Common Multiple (LCM) of 6574 and 6580 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6574 and 6580. First we will calculate the prime factors of 6574 and 6580.

Prime Factorization of 6574

Prime factors of 6574 are 2, 19, 173. Prime factorization of 6574 in exponential form is:

6574 = 21 × 191 × 1731

Prime Factorization of 6580

Prime factors of 6580 are 2, 5, 7, 47. Prime factorization of 6580 in exponential form is:

6580 = 22 × 51 × 71 × 471

Now multiplying the highest exponent prime factors to calculate the LCM of 6574 and 6580.

LCM(6574,6580) = 22 × 191 × 1731 × 51 × 71 × 471
LCM(6574,6580) = 21628460