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What is the Least Common Multiple of 3947 and 3965?

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 3947 and 3965 is 15649855.

LCM(3947,3965) = 15649855

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Least Common Multiple of 3947 and 3965 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3947 and 3965, than apply into the LCM equation.

GCF(3947,3965) = 1
LCM(3947,3965) = ( 3947 × 3965) / 1
LCM(3947,3965) = 15649855 / 1
LCM(3947,3965) = 15649855

Least Common Multiple (LCM) of 3947 and 3965 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3947 and 3965. First we will calculate the prime factors of 3947 and 3965.

Prime Factorization of 3947

Prime factors of 3947 are 3947. Prime factorization of 3947 in exponential form is:

3947 = 39471

Prime Factorization of 3965

Prime factors of 3965 are 5, 13, 61. Prime factorization of 3965 in exponential form is:

3965 = 51 × 131 × 611

Now multiplying the highest exponent prime factors to calculate the LCM of 3947 and 3965.

LCM(3947,3965) = 39471 × 51 × 131 × 611
LCM(3947,3965) = 15649855