2006-06-20 13:32:58 · 20 answers · asked by sidiqisohail 1 in Education & Reference ➔ Primary & Secondary Education
a number that has no factor but itself and 1
2006-06-20 13:34:56 · answer #1 · answered by nunovyorebiznis 4 · 0⤊ 0⤋
prime number (or prime integer, often simply called a "prime" for short) is a positive integer that has no positive integer divisors other than 1 and itself. (More concisely, a prime number is a positive integer having exactly one positive divisor other than 1.) For example, the only divisors of 13 are 1 and 13, making 13 a prime number, while the number 24 has divisors 1, 2, 3, 4, 6, 8, 12, and 24 (corresponding to the factorization ), making 24 not a prime number. Positive integers other than 1 which are not prime are called composite numbers.
Need more information about it go to the website:
http://mathworld.wolfram.com/PrimeNumber.html
2006-06-20 14:40:20 · answer #2 · answered by Smilez 3 · 0⤊ 0⤋
A prime number has exactly 2 factors - itself and 1.
Contrary to some previous answers 1 is not a prime as it does not have 2 factors.
2006-06-20 13:44:04 · answer #3 · answered by headcage 3 · 0⤊ 0⤋
A number that is only divisible by itself and 1, though 1 is not considered prime.
The first couple are
2,3,5,7,11,13, 17,19
They have a number of interesting uses at this point, not the least of which is encryption.
2006-06-20 13:38:45 · answer #4 · answered by diogenese19348 6 · 0⤊ 0⤋
A prime number is a whole number, greater than 1 that is divisible only by one and itself.
For example, 2 cannot be divided by any other whole number except 1 and 2. 3 is also prime.
4, on the other hand, can be divided by 2 - so it is not prime.
2006-06-20 13:37:36 · answer #5 · answered by Blim 5 · 0⤊ 0⤋
1 3 5 7 11 13 17 19 23 29 37 etc
2006-06-20 13:36:45 · answer #6 · answered by Anonymous · 0⤊ 0⤋
A prime number can only be divided by 1 and itself. 1 isn't a prime number because it can only be divided by itself.
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199...................................................................
2006-06-20 13:47:59 · answer #7 · answered by Em 3 · 0⤊ 0⤋
2 3 5 7 11 13 17 19 23 29 37 etc
Hope this helps
2006-06-20 13:45:33 · answer #8 · answered by tricia1971 5 · 0⤊ 0⤋
A prime number is a number who's factors are only one and itself. For example--- 13, it's factors are only 1 and 13.
2006-06-20 13:55:18 · answer #9 · answered by Anonymous · 0⤊ 0⤋
A number that can only be divided by 1 and itself.
2006-06-20 13:38:43 · answer #10 · answered by ginaforu5448 5 · 0⤊ 0⤋
A whole number greater than 1 that can only be divided evenly by itself and 1 (eg, 17)
2006-06-20 13:37:16 · answer #11 · answered by lady_banks707 2 · 0⤊ 0⤋