Is 7 a Prime Number or Composite Number

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Created by: Team Maths -, Last Updated: April 27, 2024

Is 7 a Prime Number or Composite Number

Is 7 a Prime Number?

Yes – 7 is a prime number.

Why Yes: 7 is a prime number because it meets the prime criteria of having exactly two distinct positive divisors: 1 and itself (7). Check if any number is Prime or not.

Is 7 a Prime Number

Is 7 a Composite Number?

NO – 7 is not a Composite Number

Why not: 7 is not a composite number; it is a prime number because it only has two distinct positive divisors: 1 and itself.

Is 7 a Composite Number

Problem Statements

Determine if the number 7 is prime or composite. Recall that prime numbers have only two distinct divisors: 1 and themselves, while composite numbers have more than two.

Property Answer
Is 7 a prime number? Yes
Is 7 a composite number? No
Is 7 a perfect square? No
Factors of 7 1, 7
Multiples of 7 7, 14, 21, 28, 35, 42, 49, 56, 63, 70
Cube Root of 7 Not a whole number
Square of 7 49
Square Root of 7 Not a whole number
Is 7 a Perfect Square? No
Is 7 a Perfect Cube? No
Is 7 an Irrational number No
Is 7 a Rational number Yes
Is 7 a Real number Yes
Is 7 an Integer Yes
Is 7 a Natural number Yes
Is 7 a Whole number Yes
Is 7 an Even or odd number No (7 is an odd number)
Is 7 an Ordinal number Yes
Is 7 a Complex number Yes (as all real numbers are also complex numbers

What are the factors of 7?

The factors of 7 are 1 and 7 itself. A factor is a number that divides into another number without leaving a remainder. Since 7 is a prime number, its only factors are 1 (which is a factor of every number) and 7 (since it can only be divided by itself and 1 without leaving a remainder).

What Kind of Number is 7?

  • 7 is a prime number
  • 7 is one of the odd prime numbers
  • 7 is considered a lucky number in various cultures
  • A natural number
  • A positive integer
  • A prime number
  • An odd number
  • A rational number
  • A whole number

7 is not only recognized as a prime number but also stands out as one of the notable odd prime numbers. This characteristic aligns it with the common property of prime numbers being indivisible by any number other than 1 and themselves. The number 7, in particular, holds a special place in numerous cultures around the world, often regarded as a lucky number. Its status as a prime number and its cultural significance highlight the intriguing interplay between mathematics and human belief systems. The fascination with 7 extends beyond its mathematical properties, delving into its symbolic and mystical aspects, thereby enriching our understanding of numbers not just as abstract entities, but as carriers of meaning and significance.


What kind of prime is 7?
7 is an odd prime number, which means it is a prime number greater than 2 and cannot be evenly divided by 2, fitting into the category of odd primes.

Is 7 a twin prime?
Yes, 7 is a twin prime. It forms a pair with 5, where both numbers are prime, and the difference between them is exactly two, fitting the definition of twin primes.

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