2006-06-07 06:08:59 · 12 answers · asked by navin 1 in Science & Mathematics ➔ Mathematics
997 is correct. Start at 999 and go backwards.
999 is divisible by 3
998 is divisible by 2
997 is prime, because it's not divisible by 2,3,5,7,11,13,17,19,23,29,31, or 37. We only have to check up to 37 because 37 * 37 = 1369, which is bigger than a 3 digit number. If a prime number bigger than 37 would divide into 997, then the quotient would be less than 37, and that quotient would divide 997, but we checked and no numbers less than 37 divide 997, do 997 is prime.
That is known as the "sieve of eratosthenes".
2006-06-07 06:16:13 · answer #1 · answered by kimmyisahotbabe 5 · 0⤊ 0⤋
997
2006-06-07 13:17:52 · answer #2 · answered by ninu 3 · 0⤊ 0⤋
997
2006-06-07 13:16:18 · answer #3 · answered by Zeta 6 · 0⤊ 0⤋
997
2006-06-07 13:10:38 · answer #4 · answered by Kyle B 1 · 0⤊ 0⤋
997
2006-06-07 13:10:05 · answer #5 · answered by Anonymous · 0⤊ 0⤋
What kind of Prime?
997 for normal prime
877 for Bell Prime
223 for Carol Prime
211 for Euclid prime
719 for Factoral prime.
2006-06-07 13:10:12 · answer #6 · answered by johngrobmyer 5 · 0⤊ 0⤋
The answer is 997.
Here is a neat web site that will calculate any prime number between any set of two numbers.
http://www.rsok.com/~jrm/printprimes.html
2006-06-07 13:57:12 · answer #7 · answered by bvroeg 2 · 0⤊ 0⤋
yeah 997
2006-06-07 13:18:54 · answer #8 · answered by ucd_grad_2005 4 · 0⤊ 0⤋
991 997 1009
ANS : 997
2006-06-07 13:19:05 · answer #9 · answered by Sherman81 6 · 0⤊ 0⤋
that is 997 correct?
2006-06-07 13:10:31 · answer #10 · answered by John P 2 · 0⤊ 0⤋