GCSE Maths

Prime Numbers Answer

QUESTION: What do all primes have in common?

Correct!

All the primes, apart from 2, are odd numbers. After all, if a number is even, it is divisible by two, so will have at least three factors.

You might ask what use are prime numbers. In cryptography, messages and data can be protected so only the person with the access code can read it.


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