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What is the Least Common Multiple of 64391 and 64410?

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 64391 and 64410 is 218285490.

LCM(64391,64410) = 218285490

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Least Common Multiple of 64391 and 64410 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64391 and 64410, than apply into the LCM equation.

GCF(64391,64410) = 19
LCM(64391,64410) = ( 64391 × 64410) / 19
LCM(64391,64410) = 4147424310 / 19
LCM(64391,64410) = 218285490

Least Common Multiple (LCM) of 64391 and 64410 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64391 and 64410. First we will calculate the prime factors of 64391 and 64410.

Prime Factorization of 64391

Prime factors of 64391 are 19, 3389. Prime factorization of 64391 in exponential form is:

64391 = 191 × 33891

Prime Factorization of 64410

Prime factors of 64410 are 2, 3, 5, 19, 113. Prime factorization of 64410 in exponential form is:

64410 = 21 × 31 × 51 × 191 × 1131

Now multiplying the highest exponent prime factors to calculate the LCM of 64391 and 64410.

LCM(64391,64410) = 191 × 33891 × 21 × 31 × 51 × 1131
LCM(64391,64410) = 218285490