Is 85009 a prime number?

85 009 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 85 009 is about 291.563.

Thus, the square root of 85 009 is not an integer, and therefore 85 009 is not a square number.

Anyway, 85 009 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 85 009) is the result of the product of this number (85 009) by itself (i.e., 85 009 × 85 009); the square of 85 009 is sometimes called "raising 85 009 to the power 2", or "85 009 squared".

The square of 85 009 is 7 226 530 081 because 85 009 × 85 009 = 85 009² = 7 226 530 081.

As a consequence, 85 009 is the square root of 7 226 530 081.

85 009 is a number with 5 digits.

The multiples of 85 009 are all integers evenly divisible by 85 009, that is all numbers such that the remainder of the division by 85 009 is zero. There are infinitely many multiples of 85 009. The smallest multiples of 85 009 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 85 009 too, since 0 × 85 009 = 0
• 85 009: indeed, 85 009 is a multiple of itself, since 85 009 is evenly divisible by 85 009 (we have 85 009 / 85 009 = 1, so the remainder of this division is indeed zero)
• 170 018: indeed, 170 018 = 85 009 × 2
• 255 027: indeed, 255 027 = 85 009 × 3
• 340 036: indeed, 340 036 = 85 009 × 4
• 425 045: indeed, 425 045 = 85 009 × 5
• etc.

• Preceding numbers: …85 007, 85 008
• Following numbers: 85 010, 85 011…

Nearest numbers from 85 009

• Preceding prime number: 84 991
• Following prime number: 85 021

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• 85 009 est-il un nombre premier ?