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# Series of long Integers

write a program to print the series of long integer number?

Write a program in java to find out whether the given number is prime or not

View Answers December 24, 2010 at 11:54 AM

Hello Friend,

1)Fibonacci series:

```import java.util.*;

public class Fibonacci {
public static void main(String[] args) throws Exception {
Scanner input=new Scanner(System.in);
System.out.print("Enter value of n: ");
int num = input.nextInt();
int f1=0,f2=0,f3=1;
for(int i=1;i<=num;i++){
System.out.println(f3);
f1=f2;
f2=f3;
f3=f1+f2;
}
}
}
```

2)Check Prime Number

```import java.util.*;

class  CheckPrimeNumber
{
static boolean isPrime(int number){
boolean isPrime=false;
int i=(int) Math.ceil(Math.sqrt(number));
while (i>1){
if ((number!=i) && (number%i==0)){
isPrime=false;
break;
}
else if (!isPrime)
isPrime=true;
--i;
}
return isPrime;
}
public static void main(String[] args)
{
Scanner input=new Scanner(System.in);
System.out.println("Enter Number:");
int num=input.nextInt();
if(isPrime(num)){
System.out.println("Number is Prime!");
}
else{
System.out.println("Number is not prime!");
}
}
}
```

Thanks

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