Using this program you can find out the prime numbers between 1 to 100, 100 to 999 etc. You just need to input the range, for e.g. if you want the prime numbers 100 to 999 then enter numbers 100 and 999 when program prompts for input.-Using this program you can find out the prime numbers between 1 to 100, 100 to 999 etc. You just need to input the range, for e.g. if you want the prime numbers　100 to 999 then enter numbers 100 and 999 when program prompts for input.