Use Wolfram|Alpha... go to the related link below, Wolfram|Alpha, and type in (is __ (number) prime) and then the program will compute that and tell you if it is prime or composite.
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10 input "enter a no."; n 20 for i = 1 to n 30 if n mod i = 0 then c = c +1 40 next i 50 if c = 2 then print "prime number" else print "not a prime number" 60 end
Write your own prime number program and find out.
program to find prime number in 8085 microprocessor
First write a program to generate the prime number. After one prime number was generated, divide the big int number by the prime number. If the remainder is zero then quotient is the second prime number ( also it is important to check whether the quotient is prime number or not because sometimes you will get wrong answer). Repeat the process until you get the result.
2 is the least prime number.