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we have 7 days in a week. 7 is a Prime number.

there are 31 days in some months.31 is a prime number

Q: How is prime and composite numbers used in the real world?

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There are integers such as 0 and 1. Then there are non-integer rational and real numbers.

cryptography

Non-Zero Real Numbers are infact complex conjugate numbers. They are negative prime numbers.

No, there are more normal numbers than prime numbers. Since 2, 3, 5, 13, and 19 are some examples of prime numbers, those only seem to be a few. Remember, numbers can stretch as far as someone wants, so 1,000 isn't a prime number, since you can have 250 and 4 to multiply into it, and 250 and 4 aren't prime numbers. Since the number scale can go on forever, there are more real numbers than prime numbers.

Numbers that cannot be broken down any smaller. 2 is made of 1 and 1, but 5 is prime because there are no real (or whole) numbers multiplied together that equal five.

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Prime numbers are related with composite numbers as they are both natural numbers and real numbers and also every composite number is a product of prime numbers due to which they are related with each other.For example 24=[2] [2] [3] [2].Here 24 is a composite number,real number and natural number and 2,2,3,2 are prime numbers and also they are real and natural numbers

The concepts of "prime numbers" and "composite numbers" make sense for integers (whole numbers), not for arbitrary real numbers.

Zero is composite because it has all the real numbers as factors.

There are integers such as 0 and 1. Then there are non-integer rational and real numbers.

Depends on your definition of "numbers" - basically, every integer greater than one is either composite or prime. Therefore there are many numbers that are not composite or prime: 1, or 0, any negative number, any positive real non-integer, any complex number with imaginary part non-zero

albert chicpioonker

0 and 1 (and -1) are the only integers which are not prime nor composite. All non-integral numbers are also non-prime and non-composite. This is because the property is not defined for such numbers.

cryptography

It is a non-integer real number. There is no integer that is prime and composite.

Unfortunately, in accordance with math laws, non real, negative integers cannot be factored."Prime numbers are defined as all real, non negative integers who's only factors are that of "1" and itself. Composite numbers are defined as all real, non negative integers who's factors are all real, non negative integers other than "1" and itself.

The number 417 is composite by the following definition. Composite numbers are defined as all real, non negative integers whom's factors are other real, non negative integers other than one and itself.Proof:3 x 139 = 417

The domain of your function is the set of real numbers.