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Prime and Composite Numbers

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These are numbers that have only two factors – themselves and one. These are numbers that have only two factors – themselves and one. An example of Prime Numbers would be An example of Prime Numbers would be 3= 1,3 17= 1,17 83=1,83 3= 1,3 17= 1,17 83=1,83 Prime Numbers

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Composite Numbers Numbers that have more than two factors Numbers that have more than two factors An example of composite numbers would be: 12 = 1,12 2,6 3,4 36= 1,2,3,4,6,9,12,18,36 36= 1,2,3,4,6,9,12,18,36 20= 1,2,4,5,10,20 20= 1,2,4,5,10,20

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Identify the type of number shown 15 15

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Composite Number Composite Number 15= 15= 1,3,5,15 1,3,5,15

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96 96

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Composite Number Composite Number 96 = 96 = 1,96 2,38 3,32 4,24 6,16 8,12, 1,96 2,38 3,32 4,24 6,16 8,12,

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47 47

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Prime Number Prime Number 47 47 1, 47 1, 47

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93

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Composite Number 93= 93= 1,93 3,31 1,93 3,31

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2 2

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Prime Number Prime Number 2 is the only EVEN prime number 2 is the only EVEN prime number 2= 2= 2,1 2,1

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54 54

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Composite Number Composite Number 54 = 54 = 1,54 2,27 3,18 6,9 1,54 2,27 3,18 6,9

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57 57

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Composite Number Composite Number 57= 57= 1,57 3,19 1,57 3,19

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19 19

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Prime Number Prime Number 19= 19= 1,19 1,19

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Prime Numbers: Have only two factors -- itself and one 17 23 47 59 Prime Numbers: Have only two factors -- itself and one 17 23 47 59 Composite Numbers: have more than 2 factors: 22, 50, 88, 100 One is neither

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