Pleez help!!! I need 2 know which of the numbers from 1-8 are prime.
2006-12-26 14:19:43 · 29 answers · asked by redgryfferdor 1 in Science & Mathematics ➔ Mathematics
2,3,5,7
one is not prime because, making it prime would go against the fundemental thereom of arithematic which is n=n. If one were composite, than n could equal nx1.....or nx1x1.....see the problem?
2006-12-26 14:25:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
2 3 5 7
2006-12-27 06:40:42 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1 2 3 5 7
2006-12-26 22:50:49 · answer #3 · answered by loanshark50 2 · 0⤊ 1⤋
Primes are numbers that have no divisors besides 1 and itself. A different, equivalent definition is that p is a prime when if p divides (ab), then p must divide at least one of a and b.
The primes between 1 and 8 are 2, 3, 5, and 7.
As noted above, 1 is not considered prime. It is just a convention taken to simplify laws in more advanced mathematics, such as unique factorization. If 1 were considered to be prime, unique factorization into a product of primes would not hold as we know it because 1^2 would be different from 1^3, even though they give the "same" answer.
2006-12-27 00:33:34 · answer #4 · answered by bictor717 3 · 0⤊ 0⤋
The prime numbers are 1, 2, 3, 5, and 7.
2006-12-26 22:35:26 · answer #5 · answered by David N 1 · 0⤊ 1⤋
2, 3, 5, and 7 are the only prime numbers between 1 and 8... 1 is not considered to be a prime number.
2006-12-26 22:22:50 · answer #6 · answered by blue.moon 2 · 1⤊ 0⤋
1, 2, 3, 5, and 7 are prime. A prime number is any number divisible by 1 and itself.
2006-12-27 01:14:19 · answer #7 · answered by Anonymous · 0⤊ 1⤋
1, 2, 3, 5, and 7 are prime. A prime number is any number divisible by 1 and itself.
2006-12-26 23:00:12 · answer #8 · answered by Anonymous :) 5 · 0⤊ 1⤋
The definition of a prime number is any number that has two distinct factors, they being 1 and the number itself.
It is from this definition that many consider 1 not a prime because it only has 1 factor.
These numbers are prime: 2, 3, 5, and 7
2006-12-26 22:32:26 · answer #9 · answered by AibohphobiA 4 · 0⤊ 0⤋
any number that cant be a product of 2 other numbers except 1.
so 1 2 3 5 7
2006-12-26 22:22:33 · answer #10 · answered by Tray-Z 3 · 0⤊ 2⤋
A prime number is one that is divisible only by itself and one.
Based on that definition, 1, 2, 3, 5, and 7 are the prime numbers in the number sequence 1,2,3,4,5,6,7,8.
But even thought the number 1 is divisible only by itself and one, I read somewhere that it isn't really a prime number. Don't understand why that is so, but if it is, then 2, 3, 5, 7 are the prime numbers in the number sequence 1,2,3,4,5,6,7,8.
2006-12-26 22:28:31 · answer #11 · answered by Anonymous · 0⤊ 1⤋