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What is the Least Common Multiple of 65681 and 65688?

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 65681 and 65688 is 616350504.

LCM(65681,65688) = 616350504

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Least Common Multiple of 65681 and 65688 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65681 and 65688, than apply into the LCM equation.

GCF(65681,65688) = 7
LCM(65681,65688) = ( 65681 × 65688) / 7
LCM(65681,65688) = 4314453528 / 7
LCM(65681,65688) = 616350504

Least Common Multiple (LCM) of 65681 and 65688 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65681 and 65688. First we will calculate the prime factors of 65681 and 65688.

Prime Factorization of 65681

Prime factors of 65681 are 7, 11, 853. Prime factorization of 65681 in exponential form is:

65681 = 71 × 111 × 8531

Prime Factorization of 65688

Prime factors of 65688 are 2, 3, 7, 17, 23. Prime factorization of 65688 in exponential form is:

65688 = 23 × 31 × 71 × 171 × 231

Now multiplying the highest exponent prime factors to calculate the LCM of 65681 and 65688.

LCM(65681,65688) = 71 × 111 × 8531 × 23 × 31 × 171 × 231
LCM(65681,65688) = 616350504