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What are prime numbers?

Updated: 4/27/2022
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Wiki User

6y ago

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Prime numbers are numbers that are only divisible by 1 and the number itself. Some examples of prime numbers are:

1,2,3,5,7,11,13,17,19,23,27,29,31,37,41,etc.

Prime numbers can go on forever; you just have to find out if its only factors are 1 and itself.

Example:

9 is not a Prime number because other than 1 and 9, it is also divisable by 3.

13 is a Prime number because its only factors to equal 13 are 1 and 13.

Even numbers, with the exception of 0 and 2, cannot be prime numbers.

I'm a different person:

1 isn't a prime number although many people think it is. this is because a prime number is divisible by itself and 1 but in this case it is the same number so this time 1 isn't a prime number. The definition is that a prime number is a natural number (integers 1 and greater) that has exactly two unique factors: 1 and itself. The number 1 does not have two unique factors.

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Freda McKenzie

Lvl 10
2y ago
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Wiki User

8y ago

Prime numbers are numbers that are only divisible by 1 and the number itself. Some examples of prime numbers are:

1,2,3,5,7,11,13,17,19,23,27,29,31,37,41,etc.

Prime numbers can go on forever; you just have to find out if its only factors are 1 and itself.

Example:

9 is not a prime number because other than 1 and 9, it is also divisable by 3.

13 is a prime number because its only factors to equal 13 are 1 and 13.

Even numbers, with the exception of 0 and 2, cannot be prime numbers.

I'm a different person:

1 isn't a prime number although many people think it is. this is because a prime number is divisible by itself and 1 but in this case it is the same number so this time 1 isn't a prime number. The definition is that a prime number is a natural number (integers 1 and greater) that has exactly two unique factors: 1 and itself. The number 1 does not have two unique factors.

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Wiki User

6y ago

A prime number is a number that cannot be generated by multiplying any 2 whole numbers (aside from 1 and itself). For example, 8 is not a prime number because you can get it by multiplying 4X2. 7 on the other hand IS a prime number because there are no whole numbers you can multiply to generate it aside from 1X7.

Three are infinitely many primes and every number can be expressed as the product of primes in exactly one except for the order of the factors.
A prime number is any number that has only 2 distinct (different) factors, namely 1 and itself.

for example:

  • 7 is a prime number since the only factors of 7 are 1 and 7
  • 6 is not a prime number since it has the factors 1, 2, 3 and 6.

1 is not a prime number since, although it is only divisible by 1 and itself (as itself is 1) it does not have two distinct (different) factors - it has only one factor: 1. The number 1 is called a Unit.

Numbers which are not prime (except for the number one) are called composite numbers, for example 6 is a composite number.

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Wiki User

9y ago

A prime number is a number that can only be divided by itself and 1. A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number.

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Saanvi Neema

Lvl 7
4y ago

Prime numbers are numbers which are only divisible by 1 and itself. For example 2 is a prime number because it is only divisible by 1 and itself (2) But, 6 isn't a prime number because not only is it divisible by 1 and itself (6) it is also divisible by 2 and 3.

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Wiki User

13y ago

Prime numbers are numbers that can only be divided by 1 and their self such as

1 x 7 = 7. Prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, etc

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Wiki User

13y ago

Numbers that can only divide by themselves and one.

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Wiki User

7y ago

They are integers which are greater than 1 and can only be evenly divided by 1 and themselves.

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Anonymous

Lvl 1
3y ago

Prime numbers are the numbers that have only 2 factors which are 1 and the number itself.

example: 13

1 x 13

(has only 2 factors: 1 and 13)

2 is the smallest and the only even prime number and 1 is neither a prime number or a composite number.

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Anonymous

Lvl 1
4y ago

2,4,6,8,10

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What is the total of the next eight prime numbers after twenty four?

Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.


What are numbers that have 2 factors called?

Prime numbers like 2, 3, 5 and 7.


what are the numbers for not prime numbers?

Numbers that are not prime numbers are called composite numbers.


Are any two prime numbers relatively prime?

Any two prime numbers will be relatively prime. Numbers are relatively prime if they do not have any prime factors in common. Prime numbers have only themselves as prime factors, so all prime numbers are relatively prime to the others.


Why are prime numbers divisible?

Prime numbers are divisible because any numbers that are divisible are prime. If a number isn't divisible, it isn't prime. Prime numbers have to be divisible by at least one pair of numbers to be prime.


Are there infinitely many natural numbers that are not prime?

This can be an extension to the proof that there are infinitely many prime numbers. If there are infinitely many prime numbers, then there are also infinitely many PRODUCTS of prime numbers. Those numbers that are the product of 2 or more prime numbers are not prime numbers.


What 2 prime numbers 30?

No two prime numbers can make 30.No two prime numbers can make 30.No two prime numbers can make 30.No two prime numbers can make 30.


Does prime factorization of composite numbers include prime and composite numbers?

No, prime factorizations consist entirely of prime numbers.


How can prime numbers be used in your everyday life?

Prime numbers are used to find the LCM of numbers Prime numbers are used to find the HCF of numbers Prime numbers are used to simplify fractions Prime numbers are used to find the LCD of fractions


Are co-prime numbers and twin prime numbers the same?

No - co-prime numbers are pairs of numbers which share no positive integer factors apart from 1. Twin prime numbers are a pair of prime numbers with a difference of 2.


Do all prime numbers have prime factorization?

There is no need to do prime factorization as prime numbers are already prime.