Is 320 a prime number? What are the divisors of 320?

## Parity of 320

320 is an even number, because it is evenly divisible by 2: 320 / 2 = 160.

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## Is 320 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 320 is about 17.889.

Thus, the square root of 320 is not an integer, and therefore 320 is not a square number.

## What is the square number of 320?

The square of a number (here 320) is the result of the product of this number (320) by itself (i.e., 320 × 320); the square of 320 is sometimes called "raising 320 to the power 2", or "320 squared".

The square of 320 is 102 400 because 320 × 320 = 3202 = 102 400.

As a consequence, 320 is the square root of 102 400.

## Number of digits of 320

320 is a number with 3 digits.

## What are the multiples of 320?

The multiples of 320 are all integers evenly divisible by 320, that is all numbers such that the remainder of the division by 320 is zero. There are infinitely many multiples of 320. The smallest multiples of 320 are:

## How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 320). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 17.889). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

## Numbers near 320

• Preceding numbers: …318, 319
• Following numbers: 321, 322

### Nearest numbers from 320

• Preceding prime number: 317
• Following prime number: 331
Find out whether some integer is a prime number