C# (Visual Studio 2017)

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Use Visual Studio 2017 Please

Part 1:

In your program, write a method that accepts a positive integer and returns true if the

number is a prime number and false otherwise. Note that 2 is the only even prime number.

An odd integer is prime if it not divisible by any odd integer less than or equal to the square

root of the number.

Part2:

A prime number whose reversal is also a prime number is called emirp. For example, 11, 13,

79 and 359 are emirps. Write a program that outputs to a ListBox the first 100 emirps. Your

program must contain the method from Part 1 that returns true if a number is prime; false

otherwise and another method that returns the reversal of a positive number. You can

reverse the integer in the following way:

• Convert the integer into a string

value = num.ToString();

• Use the following code to reverse the integer

string newNum = “”;

for (int l = value.Length; l > 0; l–)

newNum = newNum + value[l-1];

Also, your program should have a TextBox that will accept a positive integer from the user

and then display whether the positive integer if an emirp.

Extra Credit:

In addition to using a ListBox for the output of the 100 emirps, also write these values to an

output file. Add this as a method. You should use the values from the ListBox as output to

the file.

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