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What is the Least Common Multiple of 65856 and 65860?

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 65856 and 65860 is 1084319040.

LCM(65856,65860) = 1084319040

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Least Common Multiple of 65856 and 65860 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65856 and 65860, than apply into the LCM equation.

GCF(65856,65860) = 4
LCM(65856,65860) = ( 65856 × 65860) / 4
LCM(65856,65860) = 4337276160 / 4
LCM(65856,65860) = 1084319040

Least Common Multiple (LCM) of 65856 and 65860 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65856 and 65860. First we will calculate the prime factors of 65856 and 65860.

Prime Factorization of 65856

Prime factors of 65856 are 2, 3, 7. Prime factorization of 65856 in exponential form is:

65856 = 26 × 31 × 73

Prime Factorization of 65860

Prime factors of 65860 are 2, 5, 37, 89. Prime factorization of 65860 in exponential form is:

65860 = 22 × 51 × 371 × 891

Now multiplying the highest exponent prime factors to calculate the LCM of 65856 and 65860.

LCM(65856,65860) = 26 × 31 × 73 × 51 × 371 × 891
LCM(65856,65860) = 1084319040