Is 128001 a prime number?

128 001 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 128 001 is about 357.772.

Thus, the square root of 128 001 is not an integer, and therefore 128 001 is not a square number.

The square of a number (here 128 001) is the result of the product of this number (128 001) by itself (i.e., 128 001 × 128 001); the square of 128 001 is sometimes called "raising 128 001 to the power 2", or "128 001 squared".

The square of 128 001 is 16 384 256 001 because 128 001 × 128 001 = 128 001² = 16 384 256 001.

As a consequence, 128 001 is the square root of 16 384 256 001.

128 001 is a number with 6 digits.

The multiples of 128 001 are all integers evenly divisible by 128 001, that is all numbers such that the remainder of the division by 128 001 is zero. There are infinitely many multiples of 128 001. The smallest multiples of 128 001 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 128 001 too, since 0 × 128 001 = 0
• 128 001: indeed, 128 001 is a multiple of itself, since 128 001 is evenly divisible by 128 001 (we have 128 001 / 128 001 = 1, so the remainder of this division is indeed zero)
• 256 002: indeed, 256 002 = 128 001 × 2
• 384 003: indeed, 384 003 = 128 001 × 3
• 512 004: indeed, 512 004 = 128 001 × 4
• 640 005: indeed, 640 005 = 128 001 × 5
• etc.

• Preceding numbers: …127 999, 128 000
• Following numbers: 128 002, 128 003…

Nearest numbers from 128 001

• Preceding prime number: 127 997
• Following prime number: 128 021

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• 128 001 est-il un nombre premier ?