1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2709, 8127.
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Yes.
A prime number is a number with two and only two factors: 1 (also known as unity) and itself. 8127 has factors other than 1 and itself, so it is not a prime number. For example, it is divisible by 3. (You can check this by adding the digits of the number: 8 + 1 + 2 + 7 = 18. If the sum of the digits is divisible by 3, the number is also divisible by 3.) Therefore, 8127 is a composite number.
Yes, all numbers greater than 1 are.
402 is divisible by 2.402 is divisible by 2.402 is divisible by 2.402 is divisible by 2.
1114 is divisible by 2.1114 is divisible by 2.1114 is divisible by 2.1114 is divisible by 2.