Prime Numbers by Jeremy Sanmoogan (7R)
Prime numbers are numbers that can only be split into whole numbers, if divided by themselves or one. You probably knew that, but here are some interesting facts that you may not have known:
1. Any positive number can be made by adding together two or fewer prime
number(s) 2. 37 is the 12 th prime number while 73 is the 21 st prime number, with 37 to 73 and
12 to 21 both being reverses (This is called an emirp , which is prime spelt
backwards.)
3. All prime numbers larger than 3 are in the form of (6n ± 1) e.g. 47 = 6 × 8 – 1 or
79 = 6 × 13 + 1
4. Between any number bigger than 1, there will always be a prime number between
it and its double.
5. 73,939,133 is a prime number wherein when the end digit is removed, it stays
prime. If you check, you will see that 7,393,913,739,391,73,939 and all of those
numbers are prime.
Hopefully you learnt something reading this article on interesting facts about prime numbers.
*Green is for numbers and Red is for operations
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