Question
Asked Oct 5, 2019
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If a, b,n are integers and a^2 + b^2 = n, then the remainder of n upon division by 4 is not 3.

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Expert Answer

Step 1

Here a and b are two integer then n is the sum of two square. There is only one case n to be prime is a = b = 1 otherwise there is no prime.

 

If n is any number and if it is divided by 4 then remainder is 3 so, we can represent the number n as:

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n 3mod (4) a2b3mod(4)

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Step 2

Using the statement of the Format’s theorem on the sum of two squares stat...

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n abwith integer a and b if and only if n 1m od 4

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