Is 850 a prime number? What are the divisors of 850?

## Parity of 850

850 is an even number, because it is evenly divisible by 2: 850 / 2 = 425.

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## Is 850 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 850 is about 29.155.

Thus, the square root of 850 is not an integer, and therefore 850 is not a square number.

## What is the square number of 850?

The square of a number (here 850) is the result of the product of this number (850) by itself (i.e., 850 × 850); the square of 850 is sometimes called "raising 850 to the power 2", or "850 squared".

The square of 850 is 722 500 because 850 × 850 = 8502 = 722 500.

As a consequence, 850 is the square root of 722 500.

## Number of digits of 850

850 is a number with 3 digits.

## What are the multiples of 850?

The multiples of 850 are all integers evenly divisible by 850, that is all numbers such that the remainder of the division by 850 is zero. There are infinitely many multiples of 850. The smallest multiples of 850 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 850). 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 29.155). 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 850

• Preceding numbers: …848, 849
• Following numbers: 851, 852

### Nearest numbers from 850

• Preceding prime number: 839
• Following prime number: 853
Find out whether some integer is a prime number