Is 1321 a prime number?

1 321 is an odd number, because it is not evenly divisible by 2.

Find out more:

• 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 1 321 is about 36.346.

Thus, the square root of 1 321 is not an integer, and therefore 1 321 is not a square number.

Anyway, 1 321 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 1 321) is the result of the product of this number (1 321) by itself (i.e., 1 321 × 1 321); the square of 1 321 is sometimes called "raising 1 321 to the power 2", or "1 321 squared".

The square of 1 321 is 1 745 041 because 1 321 × 1 321 = 1 321² = 1 745 041.

As a consequence, 1 321 is the square root of 1 745 041.

1 321 is a number with 4 digits.

The multiples of 1 321 are all integers evenly divisible by 1 321, that is all numbers such that the remainder of the division by 1 321 is zero. There are infinitely many multiples of 1 321. The smallest multiples of 1 321 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 321 too, since 0 × 1 321 = 0
• 1 321: indeed, 1 321 is a multiple of itself, since 1 321 is evenly divisible by 1 321 (we have 1 321 / 1 321 = 1, so the remainder of this division is indeed zero)
• 2 642: indeed, 2 642 = 1 321 × 2
• 3 963: indeed, 3 963 = 1 321 × 3
• 5 284: indeed, 5 284 = 1 321 × 4
• 6 605: indeed, 6 605 = 1 321 × 5
• etc.

• Preceding numbers: …1 319, 1 320
• Following numbers: 1 322, 1 323…

Nearest numbers from 1 321

• Preceding prime number: 1 319
• Following prime number: 1 327

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• 1 321 est-il un nombre premier ?