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What is the Least Common Multiple of 65570 and 65578?

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 65570 and 65578 is 2149974730.

LCM(65570,65578) = 2149974730

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Least Common Multiple of 65570 and 65578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65570 and 65578, than apply into the LCM equation.

GCF(65570,65578) = 2
LCM(65570,65578) = ( 65570 × 65578) / 2
LCM(65570,65578) = 4299949460 / 2
LCM(65570,65578) = 2149974730

Least Common Multiple (LCM) of 65570 and 65578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65570 and 65578. First we will calculate the prime factors of 65570 and 65578.

Prime Factorization of 65570

Prime factors of 65570 are 2, 5, 79, 83. Prime factorization of 65570 in exponential form is:

65570 = 21 × 51 × 791 × 831

Prime Factorization of 65578

Prime factors of 65578 are 2, 32789. Prime factorization of 65578 in exponential form is:

65578 = 21 × 327891

Now multiplying the highest exponent prime factors to calculate the LCM of 65570 and 65578.

LCM(65570,65578) = 21 × 51 × 791 × 831 × 327891
LCM(65570,65578) = 2149974730