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Sets of numbers

A prime is a natural number, which can only be divided evenly into two numbers, 1 and the number itself.

Here is a list of all numbers below 200:

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 101 103 107 109 113 127 131 137 139 149 151 157 163 167 173 179 181 191 193 197 199

1 is by definition not a prime.

There are an infinite number of primes.

Prime or composite number

Please enter a number between 2 and 1000000 to see if it's a prime or a composite number.

Number: