How to find the PRIME NUMBERS less than 100

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How to find the PRIME NUMBERS less than
100

• By Monica Rosado

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Well, before we begin Lets answer the question,
What IS a prime number?

• A number greater than 1 with
• exactly 2 factors, itself and 1.

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Step 1
8
10
6
4
1
18
20
16
14
12
28
30
26
24
22
38
40
36
34
32
48
50
46
44
42
58
60
56
54
52
68
70
66
64
62
80
78
76
74
72
90
86
88
84
82
100
98
96
94
92
Cross out all multiples of 2
4
Step 2
9
15
21
27
33
39
45
51
57
63
69
75
81
87
93
99
Cross out all numbers divisible by 3
5
Step 3
5
25
35
55
65
85
95
Cross out all numbers divisible by 5
6
Step 4
49
91
Cross out all numbers divisible by 7
7
Finally Step 5
77
Cross out all multiples of 11
8
Now, we have found ALL the prime numbers between
1 and 100.