Is 20743 a prime number?

20 743 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 20 743 is about 144.024.

Thus, the square root of 20 743 is not an integer, and therefore 20 743 is not a square number.

Anyway, 20 743 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 20 743) is the result of the product of this number (20 743) by itself (i.e., 20 743 × 20 743); the square of 20 743 is sometimes called "raising 20 743 to the power 2", or "20 743 squared".

The square of 20 743 is 430 272 049 because 20 743 × 20 743 = 20 743² = 430 272 049.

As a consequence, 20 743 is the square root of 430 272 049.

20 743 is a number with 5 digits.

The multiples of 20 743 are all integers evenly divisible by 20 743, that is all numbers such that the remainder of the division by 20 743 is zero. There are infinitely many multiples of 20 743. The smallest multiples of 20 743 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 20 743 too, since 0 × 20 743 = 0
• 20 743: indeed, 20 743 is a multiple of itself, since 20 743 is evenly divisible by 20 743 (we have 20 743 / 20 743 = 1, so the remainder of this division is indeed zero)
• 41 486: indeed, 41 486 = 20 743 × 2
• 62 229: indeed, 62 229 = 20 743 × 3
• 82 972: indeed, 82 972 = 20 743 × 4
• 103 715: indeed, 103 715 = 20 743 × 5
• etc.

• Preceding numbers: …20 741, 20 742
• Following numbers: 20 744, 20 745…

Nearest numbers from 20 743

• Preceding prime number: 20 731
• Following prime number: 20 747

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• 20 743 est-il un nombre premier ?