Is 995 a prime number? What are the divisors of 995?

## Parity of 995

995 is an odd number, because it is not evenly divisible by 2.

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## Is 995 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 995 is about 31.544.

Thus, the square root of 995 is not an integer, and therefore 995 is not a square number.

## What is the square number of 995?

The square of a number (here 995) is the result of the product of this number (995) by itself (i.e., 995 × 995); the square of 995 is sometimes called "raising 995 to the power 2", or "995 squared".

The square of 995 is 990 025 because 995 × 995 = 9952 = 990 025.

As a consequence, 995 is the square root of 990 025.

## Number of digits of 995

995 is a number with 3 digits.

## What are the multiples of 995?

The multiples of 995 are all integers evenly divisible by 995, that is all numbers such that the remainder of the division by 995 is zero. There are infinitely many multiples of 995. The smallest multiples of 995 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 995). 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 31.544). 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 995

• Preceding numbers: …993, 994
• Following numbers: 996, 997

### Nearest numbers from 995

• Preceding prime number: 991
• Following prime number: 997
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