# Is 35 a prime number?

##### 1 Answer

No, it is a composite number:

#### Explanation:

The number

#35 = 5 xx 7#

You can test for divisibility by the first few prime numbers like this:

**2:** If the number ends with an even digit, then it is itself even, that is divisible by

**3:** If the sum of the digits of a number is divisible by

**5:** If the last digit is

There are methods for larger prime numbers, but they get more complicated. Often it is just as easy to divide the number, not bothering to remember the quotient on the way, just the remainder.

For example, to check whether