What are the factors of 23? Is 23 prime or composite?
2 Answers
Explanation:
A prime number can be defined as:
"A natural number which has only 2 factors - itself and 1".
23 has only 2 factors:
There are no other natural numbers which are factors.
If it had 3 or more factors it would be composite.
1 is the only number which has 1 factor - it is neither prime nor composite.
The number
Explanation:
We can first figure out whether a number is prime or composite purely by decomposing it into a "prime factorization". You are normally able to do this using a scientific calculator such as the Casio fx-82ES PLUS, however, you can also use a factor tree.
If the prime decomposition has only the number, then it is prime:
P(d) =
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