** **

**Do you know ??**

** There are “Good Prime Numbers ” & “Bad Prime Numbers “**

**Actually , Prime numbers are of three forms **

** 1) p =2**

**2) p =4m+1**

**3) p=4m+3**

**First two forms are ” Good Prime Numbers ” **

** & third one is ” Bad Prime Numbers “**

**Why Good & Bad Prime numbers ?**

**Why they are called so ??**

**Curious to know about it ??**

** If then , the first two forms of Prime Number can be expressed as the sum of two square numbers , whereas the third form cannot be expressed as sum of two square numbers.**

**Look at some examples**

** 2 = 1^2 +1^2**

**5 = 1^2 +2^2**

**7 cannot be expressed as above, it falls in the third form.**

** Try out for other numbers yourself & learn more !**

** #PrimeNumbers #GoodBad #Numbers**

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