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What is the Least Common Multiple of 78568 and 78576?

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 78568 and 78576 is 771694896.

LCM(78568,78576) = 771694896

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Least Common Multiple of 78568 and 78576 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78568 and 78576, than apply into the LCM equation.

GCF(78568,78576) = 8
LCM(78568,78576) = ( 78568 × 78576) / 8
LCM(78568,78576) = 6173559168 / 8
LCM(78568,78576) = 771694896

Least Common Multiple (LCM) of 78568 and 78576 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78568 and 78576. First we will calculate the prime factors of 78568 and 78576.

Prime Factorization of 78568

Prime factors of 78568 are 2, 7, 23, 61. Prime factorization of 78568 in exponential form is:

78568 = 23 × 71 × 231 × 611

Prime Factorization of 78576

Prime factors of 78576 are 2, 3, 1637. Prime factorization of 78576 in exponential form is:

78576 = 24 × 31 × 16371

Now multiplying the highest exponent prime factors to calculate the LCM of 78568 and 78576.

LCM(78568,78576) = 24 × 71 × 231 × 611 × 31 × 16371
LCM(78568,78576) = 771694896