Sieve of Eratosthenes

Numbers and Numerals	Composite Numbers	Prime Numbers	Facts (Prime Numbers)	Even Numbers
Odd Numbers	Natural Numbers	Whole Numbers	Predecessor Number	Successor Number
Number Expansion	Number Comparison	Literal Numbers	Roman Numbers	Coprime Numbers
Perfect Numbers	Multiplication Properties of Numbers	Order of Numbers	Sieve of Eratosthenes	Number line
Square Numbers	Shortcut Method of Numbers	Cube Numbers	Real Numbers

Explanation In Third Century B.C. a Greek Mathmatician " Eratosthenes " developed a table to List all the Prime Numbers and Composite Numbers between 1 to 100. This method is known as " Sieve of Eratosthenes" The Table developed by him is as:- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 The Steps to be followed are as:- Step 1 = Strike Out 1 because 1 is neither a Prime Number nor a Composite Number. Step 2 = Write 2 in bold. Step 3 = Strike Out all the Multiple of 2 other than itself. e.g. 2, 4, 6, 8, 10, 12 ........and so on till 100. Step 4 = After Step 3, the next non-strike number you will find is 3. Write 3 in bold. Step 5 = Strike Out all the Multiple of 3 other than itself. e.g. 9, 15, 21, 27, ........and so on till 100. Step 6 = After Step 5, the next non-strike number you will find is 5. Write 5 in bold. Step 7 = Strike Out all the Multiple of 5 other than itself. e.g. 25, 35, 55, ........and so on till 100. Step 8 = After Step 7, the next non-strike number you will find is 7. Write 7 in bold. Step 9 = Strike Out all the Multiple of 7 other than itself. Step 10 = Continue this process, untill all the numbers in the table are either Strike out or written in Bold. Step 11 = All the Strike Out Numbers are Composite Numbers (except 1). Step 12 = All those numbers which are written in Bold are Prime Numbers.