Is 13921 a prime number?

13 921 is an odd number, because it is not evenly divisible by 2.

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• What is an even 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 13 921 is about 117.987.

Thus, the square root of 13 921 is not an integer, and therefore 13 921 is not a square number.

Anyway, 13 921 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 13 921) is the result of the product of this number (13 921) by itself (i.e., 13 921 × 13 921); the square of 13 921 is sometimes called "raising 13 921 to the power 2", or "13 921 squared".

The square of 13 921 is 193 794 241 because 13 921 × 13 921 = 13 921² = 193 794 241.

As a consequence, 13 921 is the square root of 193 794 241.

13 921 is a number with 5 digits.

The multiples of 13 921 are all integers evenly divisible by 13 921, that is all numbers such that the remainder of the division by 13 921 is zero. There are infinitely many multiples of 13 921. The smallest multiples of 13 921 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 13 921 too, since 0 × 13 921 = 0
• 13 921: indeed, 13 921 is a multiple of itself, since 13 921 is evenly divisible by 13 921 (we have 13 921 / 13 921 = 1, so the remainder of this division is indeed zero)
• 27 842: indeed, 27 842 = 13 921 × 2
• 41 763: indeed, 41 763 = 13 921 × 3
• 55 684: indeed, 55 684 = 13 921 × 4
• 69 605: indeed, 69 605 = 13 921 × 5
• etc.

• Preceding numbers: …13 919, 13 920
• Following numbers: 13 922, 13 923…

Nearest numbers from 13 921

• Preceding prime number: 13 913
• Following prime number: 13 931

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• 13 921 est-il un nombre premier ?