Is 266 a prime number? What are the divisors of 266?

## Parity of 266

266 is an even number, because it is evenly divisible by 2: 266 / 2 = 133.

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## Is 266 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 266 is about 16.310.

Thus, the square root of 266 is not an integer, and therefore 266 is not a square number.

## What is the square number of 266?

The square of a number (here 266) is the result of the product of this number (266) by itself (i.e., 266 × 266); the square of 266 is sometimes called "raising 266 to the power 2", or "266 squared".

The square of 266 is 70 756 because 266 × 266 = 2662 = 70 756.

As a consequence, 266 is the square root of 70 756.

## Number of digits of 266

266 is a number with 3 digits.

## What are the multiples of 266?

The multiples of 266 are all integers evenly divisible by 266, that is all numbers such that the remainder of the division by 266 is zero. There are infinitely many multiples of 266. The smallest multiples of 266 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 266). 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 16.310). 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 266

• Preceding numbers: …264, 265
• Following numbers: 267, 268

### Nearest numbers from 266

• Preceding prime number: 263
• Following prime number: 269
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