(Divisibility Rules link) Tags: Visual edit Visual edit: Check |
(Replaced content with " 3 Category:Prime Numbers Category:1-Digit Prime Numbers") |
||
| Line 1: | Line 1: | ||
| − | {{Infobox |
||
| − | |title = 3 |
||
| − | |image = 3.png |
||
| − | |imagewidth = 200 |
||
| − | |roman-number = III |
||
| − | |ordinal-number = third |
||
| − | |cardinal-number = three |
||
| − | |Base-2 Form = 11 |
||
| − | |Base-8 Form = 3 |
||
| − | |Base-16 Form = 3 |
||
| − | |previous = [[2|<font color="white">2</font>]] |
||
| − | |next = [[5|<font color="white">5</font>]]}} |
||
| − | 3 is the second prime number, and the second single digit prime number. 3's prime factors are 1 and 3. It is said to be the first odd prime, because the previous prime number is [[2]], which is even. |
||
| − | |||
| − | ==Proofs== |
||
| − | *It is [[Divisibility Rules|divisible by]] 1: 3/1=3 |
||
| − | *It is '''not '''divisible by {{2}}: 3/2=1.5 |
||
| − | *It is divisible by {{3}}: 3/3=1 |
||
| − | *Therefore it has 2 factors, not 3, because 3 divided by 2 does not result in an [[integer]] value. |
||
| − | |||
| − | ==Relationship with other odd numbers== |
||
| − | ===The numbers before=== |
||
| − | *2 is the first prime number. It is the only '''even''' prime number. |
||
| − | *'''1''', the number before 2, is '''not '''a prime number. |
||
| − | ===The numbers after=== |
||
| − | *The next odd number, [[5]], is a prime number. |
||
| − | **There are no odd numbers between 3 and 5. As a result, they are twin primes. |
||
| − | *[[7]], the odd number following 5, is a prime number. |
||
| − | **3 and 7 are four numbers apart, therefore, they are cousin primes. |
||
| − | *9, the odd number following 7, is not a prime number. It is a square number, and the first odd composite number. |
||
| − | |||
| − | ==Usage== |
||
| − | |||
| − | ===General=== |
||
| − | * Trilogy refers to a set of three works of art that are connected, either as a single work or three individual works. |
||
| − | ===Science=== |
||
| − | *Lithium's atomic number and number of electrons are 3. |
||
| − | *Group three elements also have the valence of +3. Similarly, group five elements have the valence of -3. |
||
| − | *Tritium / hydrogen-3, has a nucleon number of 3. |
||
| − | ===Sports=== |
||
| − | *In basketball, a shot behind the three-point arc is worth three points, unless in the 3x3 variant. |
||
| − | * In baseball, 3 strikes are required for the player to be considered "out", and 3 outs are required for the attacking team to exchange with the opposing team. |
||
| − | ===Video Games=== |
||
| − | *In The Legend of Zelda series, there is a sacred relic called Triforce, which consists of three separate golden triangles. |
||
| − | |||
| − | [[tl:3]] |
||
| − | {{Navbox primes}} |
||
[[Category:Prime numbers from 1-100| 3]] |
[[Category:Prime numbers from 1-100| 3]] |
||
[[Category:Prime Numbers]] |
[[Category:Prime Numbers]] |
||
2,705
pages