There are few real-life uses for prime numbers. Nevertheless, they do have a useful purpose in some cases. For instance:
Prime numbers are used to encrypt credit cards and identify them.
Math teacher
it is when you "factor tree" a number down until it cn non longer be broken down.2 factors of 84 are 4 and 21 because when you multiply them, you get 84. factor 4 down into 2 and 2. factor 21 down into 3 and 7. in this case, the prime factorization is two to the second power times three times seven.
Well, honey, the greatest common factor of 12, 28, and 40 is 4. It's like finding the perfect little black dress that fits all three numbers like a glove. So, grab your calculator and toast to the fabulous number 4, because it's the winner in this math fashion show.
There are multiple uses and application of negative numbers. They are used on a daily basis when describing temperature and in banking. For example, an overdrawn balance will be reported in negative amounts.
snezzing
All composite numbers have prime factors and these are used to find the highest common factor of 2 or more numbers and they are also used in finding the lowest common multiple of 2 or more numbers. Composite numbers have 2 or more factors while prime numbers have only 2 factors which are themselves and one
Humans sometimes use prime numbers when doing mathematics.
Prime numbers are used to encrypt credit cards and identify them.
A math teacher is the job that uses prime and composite numbers.
Homo sapiens
People use them every day but just may not know it. When you enter information into computers that is then encrypted, this uses prime numbers. So to safely give a credit card over the internet, you are using prime numbers. All the numbers you use every day are made up of prime numbers.
7532
It allows you to find all the factors of a number. Prime factorisation is necessary for calculating the greatest common factor and least common multiple of sets of numbers. That information is essential for working with rational numbers.
7532
Public key encryption is based on composite numbers. In fact it is based on composite numbers which are the product of two very large prime numbers.
They can be 3*5*7*11 = 1155