Is 13978 a prime number?

13 978 is an even number, because it is evenly divisible by 2: 13 978 / 2 = 6 989.

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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 13 978 is about 118.229.

Thus, the square root of 13 978 is not an integer, and therefore 13 978 is not a square number.

The square of a number (here 13 978) is the result of the product of this number (13 978) by itself (i.e., 13 978 × 13 978); the square of 13 978 is sometimes called "raising 13 978 to the power 2", or "13 978 squared".

The square of 13 978 is 195 384 484 because 13 978 × 13 978 = 13 978² = 195 384 484.

As a consequence, 13 978 is the square root of 195 384 484.

13 978 is a number with 5 digits.

The multiples of 13 978 are all integers evenly divisible by 13 978, that is all numbers such that the remainder of the division by 13 978 is zero. There are infinitely many multiples of 13 978. The smallest multiples of 13 978 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 13 978 too, since 0 × 13 978 = 0
• 13 978: indeed, 13 978 is a multiple of itself, since 13 978 is evenly divisible by 13 978 (we have 13 978 / 13 978 = 1, so the remainder of this division is indeed zero)
• 27 956: indeed, 27 956 = 13 978 × 2
• 41 934: indeed, 41 934 = 13 978 × 3
• 55 912: indeed, 55 912 = 13 978 × 4
• 69 890: indeed, 69 890 = 13 978 × 5
• etc.

• Preceding numbers: …13 976, 13 977
• Following numbers: 13 979, 13 980…

Nearest numbers from 13 978

• Preceding prime number: 13 967
• Following prime number: 13 997

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• 13 978 est-il un nombre premier ?