Is 7 a prime number? How do you know that 7 is prime or composite? Let us first understand what makes a number 'prime'. If a number has only 2 factors (1 and the number itself), then it is a prime number. If the number has more than 2 factors, then it is composite. Now, what do you think of 7? Is 7 a prime number? "Yes, 7 is a prime number." Since 7 has only 2 factors i.e. 1 and 7, it is a prime number. Let's study this in detail.
- Is 7 a prime number? - Yes
- Is 7 a composite number? - No
- Prime Factors of 7 - 7
- Is 7 a perfect square? - No
- Factors of 7 - 1, 7
Is 7 a Prime Number?
Yes, 7 is a prime number. The number 7 is divisible only by 1 and the number itself. For a number to be classified as a prime number, it should have exactly two factors. Since 7 has exactly two factors, i.e. 1 and 7, it is a prime number.
How is 7 a Prime Number?
To understand whether 7 is prime or composite, it is important to find its factors.
Factors of 7: 1, 7
Therefore, we can say that 7 is a prime number since it has only 2 factors.
Is 7 a Composite Number?
No, since 7 has only two factors, i.e. 1 and 7. In other words, 7 is not a composite number because 7 doesn’t have more than 2 factors.
Problem Statements:
| Is 7 a Prime Number? | Yes |
| Is 7 a Composite Number? | No |
| Is 7 a Perfect Cube? | No |
| Is 7 a Perfect Square? | No |
| Cube Root of 7 | 1.912930 |
| Multiples of 7 | 7, 14, 21, 28, 35, 42, 49, 56, 63, 70 |
| Is 7 an Even Number? | No |
| Square Root of 7 | 2.645751 |
| Is 7 an Odd Number? | Yes |
Fun Facts:
- A pair of prime numbers X and Y are said to be twin prime numbers if the absolute difference between them is 2. Example - (41, 43) are twin prime numbers.
- 23 is the smallest prime number having consecutive digits.
- 2 is the smallest prime number.
☛ Also Check:
