Is 21713 a prime number?

21 713 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 21 713 is about 147.353.

Thus, the square root of 21 713 is not an integer, and therefore 21 713 is not a square number.

Anyway, 21 713 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 21 713) is the result of the product of this number (21 713) by itself (i.e., 21 713 × 21 713); the square of 21 713 is sometimes called "raising 21 713 to the power 2", or "21 713 squared".

The square of 21 713 is 471 454 369 because 21 713 × 21 713 = 21 713² = 471 454 369.

As a consequence, 21 713 is the square root of 471 454 369.

21 713 is a number with 5 digits.

The multiples of 21 713 are all integers evenly divisible by 21 713, that is all numbers such that the remainder of the division by 21 713 is zero. There are infinitely many multiples of 21 713. The smallest multiples of 21 713 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 713 too, since 0 × 21 713 = 0
• 21 713: indeed, 21 713 is a multiple of itself, since 21 713 is evenly divisible by 21 713 (we have 21 713 / 21 713 = 1, so the remainder of this division is indeed zero)
• 43 426: indeed, 43 426 = 21 713 × 2
• 65 139: indeed, 65 139 = 21 713 × 3
• 86 852: indeed, 86 852 = 21 713 × 4
• 108 565: indeed, 108 565 = 21 713 × 5
• etc.

• Preceding numbers: …21 711, 21 712
• Following numbers: 21 714, 21 715…

Nearest numbers from 21 713

• Preceding prime number: 21 701
• Following prime number: 21 727

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• 21 713 est-il un nombre premier ?