100 102 104 105 106
108 110 111 112 115
116 117 118 119 120
121 122 123 124 125
126 128 129 130 132
133 134 135 136 138
140
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140=2x2x5x7, 140 is a composite. all even numbers above 2 are composite composite. because they can be divided by more than just 1 and themselves. 140/2 = 70 140/4 = 35 140/5 = 28 140/10 = 14
The two-digit factors of 100 and 1000 are all composite.
All of the composite numbers less than 100 have factor pairs.
710 is a composite number, as are all even numbers.
All even numbers greater than 2 are composite.