Here'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. |