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What is the Least Common Multiple of 64857 and 64865?

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 64857 and 64865 is 4206949305.

LCM(64857,64865) = 4206949305

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Least Common Multiple of 64857 and 64865 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64857 and 64865, than apply into the LCM equation.

GCF(64857,64865) = 1
LCM(64857,64865) = ( 64857 × 64865) / 1
LCM(64857,64865) = 4206949305 / 1
LCM(64857,64865) = 4206949305

Least Common Multiple (LCM) of 64857 and 64865 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64857 and 64865. First we will calculate the prime factors of 64857 and 64865.

Prime Factorization of 64857

Prime factors of 64857 are 3, 13, 1663. Prime factorization of 64857 in exponential form is:

64857 = 31 × 131 × 16631

Prime Factorization of 64865

Prime factors of 64865 are 5, 12973. Prime factorization of 64865 in exponential form is:

64865 = 51 × 129731

Now multiplying the highest exponent prime factors to calculate the LCM of 64857 and 64865.

LCM(64857,64865) = 31 × 131 × 16631 × 51 × 129731
LCM(64857,64865) = 4206949305