Is 21613 a prime number?

21 613 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 21 613 is about 147.014.

Thus, the square root of 21 613 is not an integer, and therefore 21 613 is not a square number.

Anyway, 21 613 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 21 613) is the result of the product of this number (21 613) by itself (i.e., 21 613 × 21 613); the square of 21 613 is sometimes called "raising 21 613 to the power 2", or "21 613 squared".

The square of 21 613 is 467 121 769 because 21 613 × 21 613 = 21 613² = 467 121 769.

As a consequence, 21 613 is the square root of 467 121 769.

21 613 is a number with 5 digits.

The multiples of 21 613 are all integers evenly divisible by 21 613, that is all numbers such that the remainder of the division by 21 613 is zero. There are infinitely many multiples of 21 613. The smallest multiples of 21 613 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 613 too, since 0 × 21 613 = 0
• 21 613: indeed, 21 613 is a multiple of itself, since 21 613 is evenly divisible by 21 613 (we have 21 613 / 21 613 = 1, so the remainder of this division is indeed zero)
• 43 226: indeed, 43 226 = 21 613 × 2
• 64 839: indeed, 64 839 = 21 613 × 3
• 86 452: indeed, 86 452 = 21 613 × 4
• 108 065: indeed, 108 065 = 21 613 × 5
• etc.

• Preceding numbers: …21 611, 21 612
• Following numbers: 21 614, 21 615…

Nearest numbers from 21 613

• Preceding prime number: 21 611
• Following prime number: 21 617

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• 21 613 est-il un nombre premier ?