0Here's a chart with all the numbers from 1-100:
| Number | Is it Prime? | Explanation |
|---|---|---|
| 1 | No | 1 is neither prime nor composite. It's a special number. |
| 2 | Yes | 2 is divisible by itself and 1. |
| 3 | Yes | 3 is divisible by itself and 1. |
| 4 | No | 4 is divisible by 2, so it's not prime. |
| 5 | Yes | 5 is divisible by itself and 1. |
| 6 | No | 6 is divisible by 2 and 3, so it's not prime. |
| 7 | Yes | 7 is divisible by itself and 1. |
| 8 | No | 8 is divisible by 2, so it's not prime. |
| 9 | No | 9 is divisible by 3, so it's not prime. |
| 10 | No | 10 is divisible by 2 and 5, so it's not prime. |
| 11 | Yes | 11 is divisible by itself and 1. |
| 12 | No | 12 is divisible by 2 and 3, so it's not prime. |
| 13 | Yes | 13 is divisible by itself and 1. |
| 14 | No | 14 is divisible by 2 and 7, so it's not prime. |
| 15 | No | 15 is divisible by 3 and 5, so it's not prime. |
| 16 | No | 16 is divisible by 2, so it's not prime. |
| 17 | Yes | 17 is divisible by itself and 1. |
| 18 | No | 18 is divisible by 2 and 3, so it's not prime. |
| 19 | Yes | 19 is divisible by itself and 1. |
| 20 | No | 20 is divisible by 2 and 5, so it's not prime. |
| 21 | No | 21 is divisible by 3 and 7, so it's not prime. |
| 22 | No | 22 is divisible by 2 and 11, so it's not prime. |
| 23 | Yes | 23 is divisible by itself and 1. |
| 24 | No | 24 is divisible by 2 and 3, so it's not prime. |
| 25 | No | 25 is divisible by 5, so it's not prime. |
| 26 | No | 26 is divisible by 2 and 13, so it's not prime. |
| 27 | No | 27 is divisible by 3, so it's not prime. |
| 28 | No | 28 is divisible by 2 and 7, so it's not prime. |
| 29 | Yes | 29 is divisible by itself and 1. |
| 30 | No | 30 is divisible by 2, 3, and 5, so it's not prime. |
| 31 | Yes | 31 is divisible by itself and 1. |
| 32 | No | 32 is divisible by 2, so it's not prime. |
| 33 | No | 33 is divisible by 3 and 11, so it's not prime. |
| 34 | No | 34 is divisible by 2 and 17, so it's not prime. |
| 35 | No | 35 is divisible by 5 and 7, so it's not prime. |
| 36 | No | 36 is divisible by 2 and 3, so it's not prime. |
| 37 | Yes | 37 is divisible by itself and 1. |
| 38 | No | 38 is divisible by 2 and 19, so it's not prime. |
| 39 | No | 39 is divisible by 3 and 13, so it's not prime. |
| 40 | No | 40 is divisible by 2 and 5, so it's not prime. |
| 41 | Yes | 41 is divisible by itself and 1. |
| 42 | No | 42 is divisible by 2, 3, and 7, so it's not prime. |
| 43 | Yes | 43 is divisible by itself and 1. |
| 44 | No | 44 is divisible by 2 and 11, so it's not prime. |
| 45 | No | 45 is divisible by 3 and 5, so it's not prime. |
| 46 | No | 46 is divisible by , so it's not prime. |
| 47 | Yes | 47 is divisible by itself and 1. |
| 48 | No | 48 is divisible by 2 and 3, so it's not prime. |
| 49 | No | 49 is divisible by 7, so it's not prime. |
| 50 | No | 50 is divisible by 2 and 5, so it's not prime. |
| 51 | No | 51 is divisible by 3 and 17, so it's not prime. |
| 52 | No | 52 is divisible by 2 and 13, so it's not prime. |
| 53 | Yes | 53 is divisible by itself and 1. |
| 54 | No | 54 is divisible by 2 and 3, so it's not prime. |
| 55 | No | 55 is divisible by 5 and 11, so it's not prime. |
| 56 | No | 56 is divisible by 2 and 7, so it's not prime. |
| 57 | No | 57 is divisible by 3 and 19, so it's not prime. |
| 58 | No | 58 is divisible by 2 and 29, so it's not prime. |
| 59 | Yes | 59 is divisible by itself and 1. |
| 60 | No | 60 is divisible by 2, 3, and 5, so it's not prime. |
| 61 | Yes | 61 is divisible by itself and 1. |
| 62 | No | 62 is divisible by 2 and 31, so it's not prime. |
| 63 | No | 63 is divisible by 3 and 7, so it's not prime. |
| 64 | No | 64 is divisible by 2, so it's not prime. |
| 65 | No | 65 is divisible by 5 and 13, so it's not prime. |
| 66 | No | 66 is divisible by 2, 3, and 11, so it's not prime. |
| 67 | Yes | 67 is divisible by itself and 1. |
| 68 | No | 68 is divisible by 2 and 17, so it's not prime. |
| 69 | No | 69 is divisible by 3 and 23, so it's not prime. |
| 70 | No | 70 is divisible by 2, 5, and 7, so it's not prime. |
| 71 | Yes | 71 is divisible by itself and 1. |
| 72 | No | 72 is divisible by 2 and 3, so it's not prime. |
| 73 | Yes | 73 is divisible by itself and 1. |
| 74 | No | 74 is divisible by 2 and 37, so it's not prime. |
| 75 | No | 75 is divisible by 3 and 5, so it's not prime. |
| 76 | No | 76 is divisible by 2 and 19, so it's not prime. |
| 77 | No | 77 is divisible by 7 and 11, so it's not prime. |
| 78 | No | 78 is divisible by 2, 3, and 13, so it's not prime. |
| 79 | Yes | 79 is divisible by itself and 1. |
| 80 | No | 80 is divisible by 2 and 5, so it's not prime. |
| 81 | No | 81 is divisible by 3, so it's not prime. |
| 82 | No | 82 is divisible by 2 and 41, so it's not prime. |
| 83 | Yes | 83 is divisible by itself and 1. |
| 84 | No | 84 is divisible by 2, 3 and 7, so it's not prime. |
| 85 | No | 85 is divisible by 5 and 17, so it's not prime. |
| 86 | No | 86 is divisible by 2 and 43, so it's not prime. |
| 87 | No | 87 is divisible by 3 and 29, so it's not prime. |
| 88 | No | 88 is divisible by 2 and 11, so it's not prime. |
| 89 | Yes | 89 is divisible by itself and 1. |
| 90 | No | 90 is divisible by 2, 3, and 5, so it's not prime. |
| 91 | No | 91 is divisible by 7 and 13, so it's not prime. |
| 92 | No | 92 is divisible by 2 and 23, so it's not prime. |
| 93 | No | 93 is divisible by 3 and 31, so it's not prime. |
| 94 | No | 94 is divisible by 2 and 47, so it's not prime. |
| 95 | No | 95 is divisible by 5 and 19, so it's not prime. |
| 96 | No | 96 is divisible by 2 and 3, so it's not prime. |
| 97 | Yes | 97 is divisible by itself and 1. |
| 98 | No | 98 is divisible by 2 and 7, so it's not prime. |
| 99 | No | 99 is divisible by 3 and 11, so it's not prime. |
| 100 | No | 100 is divisible by 2 and 5, so it's not prime. |
