Is 72109 a prime number?

72 109 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 72 109 is about 268.531.

Thus, the square root of 72 109 is not an integer, and therefore 72 109 is not a square number.

Anyway, 72 109 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 72 109) is the result of the product of this number (72 109) by itself (i.e., 72 109 × 72 109); the square of 72 109 is sometimes called "raising 72 109 to the power 2", or "72 109 squared".

The square of 72 109 is 5 199 707 881 because 72 109 × 72 109 = 72 109² = 5 199 707 881.

As a consequence, 72 109 is the square root of 5 199 707 881.

72 109 is a number with 5 digits.

The multiples of 72 109 are all integers evenly divisible by 72 109, that is all numbers such that the remainder of the division by 72 109 is zero. There are infinitely many multiples of 72 109. The smallest multiples of 72 109 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 72 109 too, since 0 × 72 109 = 0
• 72 109: indeed, 72 109 is a multiple of itself, since 72 109 is evenly divisible by 72 109 (we have 72 109 / 72 109 = 1, so the remainder of this division is indeed zero)
• 144 218: indeed, 144 218 = 72 109 × 2
• 216 327: indeed, 216 327 = 72 109 × 3
• 288 436: indeed, 288 436 = 72 109 × 4
• 360 545: indeed, 360 545 = 72 109 × 5
• etc.

• Preceding numbers: …72 107, 72 108
• Following numbers: 72 110, 72 111…

Nearest numbers from 72 109

• Preceding prime number: 72 103
• Following prime number: 72 139

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• 72 109 est-il un nombre premier ?