十七是质数。

Seventeen is a prime number.

质数只能有1和它本身作为质因数。

A prime number can only have 1 and itself as a prime factor.

所有的奇数都是质数.

All the odd numbers are prime numbers.

这是因为质数在起作用。

This is where prime numbers come into play.

那一个数不是合成数,也不是质数?

Which number is neither a prime number nor a composite number?

现代的网络代码依赖于质数的领域。

Modern internet codes rely on properties of prime numbers.

欧几里得证明了质数的一个无穷量。

Euclid proved that there is an infinite quantity of prime numbers.

为了考察为什么会有这个限制, 假设表的容量不是质数.

To see why, imagine a situation where the table size is not a prime number.

概括： “质数和合数最大的区别是什么？”

So what is the difference between prime numbers and sum numbers?

“看看,现在剩下的都是什么数? ”“质数 ”

Now what numbers are the rest of them? Prime numbers.