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What is the Least Common Multiple of 65408 and 65415?

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 65408 and 65415 is 611237760.

LCM(65408,65415) = 611237760

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Least Common Multiple of 65408 and 65415 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65408 and 65415, than apply into the LCM equation.

GCF(65408,65415) = 7
LCM(65408,65415) = ( 65408 × 65415) / 7
LCM(65408,65415) = 4278664320 / 7
LCM(65408,65415) = 611237760

Least Common Multiple (LCM) of 65408 and 65415 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65408 and 65415. First we will calculate the prime factors of 65408 and 65415.

Prime Factorization of 65408

Prime factors of 65408 are 2, 7, 73. Prime factorization of 65408 in exponential form is:

65408 = 27 × 71 × 731

Prime Factorization of 65415

Prime factors of 65415 are 3, 5, 7, 89. Prime factorization of 65415 in exponential form is:

65415 = 31 × 51 × 72 × 891

Now multiplying the highest exponent prime factors to calculate the LCM of 65408 and 65415.

LCM(65408,65415) = 27 × 72 × 731 × 31 × 51 × 891
LCM(65408,65415) = 611237760