It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 130 165 278 is not a prime number.
For example, 130 165 278 can be divided by 2: 130 165 278 / 2 = 65 082 639.
For 130 165 278 to be a prime number, it would have been required that 130 165 278 has only two divisors, i.e., itself and 1.
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130 165 278 is an even number, because it is evenly divisible by 2: 130 165 278 / 2 = 65 082 639.
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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 130 165 278 is about 11 409.000.
Thus, the square root of 130 165 278 is not an integer, and therefore 130 165 278 is not a square number.
The square of a number (here 130 165 278) is the result of the product of this number (130 165 278) by itself (i.e., 130 165 278 × 130 165 278); the square of 130 165 278 is sometimes called "raising 130 165 278 to the power 2", or "130 165 278 squared".
The square of 130 165 278 is 16 942 999 596 817 284 because 130 165 278 × 130 165 278 = 130 165 2782 = 16 942 999 596 817 284.
As a consequence, 130 165 278 is the square root of 16 942 999 596 817 284.
130 165 278 is a number with 9 digits.
The multiples of 130 165 278 are all integers evenly divisible by 130 165 278, that is all numbers such that the remainder of the division by 130 165 278 is zero. There are infinitely many multiples of 130 165 278. The smallest multiples of 130 165 278 are: