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What is the Least Common Multiple of 65530 and 65538?

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 65530 and 65538 is 2147352570.

LCM(65530,65538) = 2147352570

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Least Common Multiple of 65530 and 65538 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65530 and 65538, than apply into the LCM equation.

GCF(65530,65538) = 2
LCM(65530,65538) = ( 65530 × 65538) / 2
LCM(65530,65538) = 4294705140 / 2
LCM(65530,65538) = 2147352570

Least Common Multiple (LCM) of 65530 and 65538 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65530 and 65538. First we will calculate the prime factors of 65530 and 65538.

Prime Factorization of 65530

Prime factors of 65530 are 2, 5, 6553. Prime factorization of 65530 in exponential form is:

65530 = 21 × 51 × 65531

Prime Factorization of 65538

Prime factors of 65538 are 2, 3, 11, 331. Prime factorization of 65538 in exponential form is:

65538 = 21 × 32 × 111 × 3311

Now multiplying the highest exponent prime factors to calculate the LCM of 65530 and 65538.

LCM(65530,65538) = 21 × 51 × 65531 × 32 × 111 × 3311
LCM(65530,65538) = 2147352570