Composite numbers chart before 87
Composite Numbers Before Calculator
| Enter a natural number to calculate the composites before it: Ex.: 10, 100, 64, 1000, ... until 20,000. |
Composite Numbers Before 87: |
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The number 87 is not a prime number because it is possible to express it as a product of prime factors. In other words, 87 can be divided by 1, by itself and at least by 3 and 29. So, 87 is a 'composite number'.
List of composite numbers before 87: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87. |
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Composite Number Definition
A composite number is a whole number that can be divided evenly by numbers other than 1 or itself.
A composite number n is a positive integer n>1 which is not prime (i.e., it can be divided by whole number other than 1 and itself).
- Example 1: 6 can be divided evenly by 2, so 6 is a composite number.
- Example 2: 5 cannot be divided evenly (except by 1 and 5), so is not a composite number (it is a so called prime number).