It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 147 216 is not a prime number.
For example, 147 216 can be divided by 2: 147 216 / 2 = 73 608.
For 147 216 to be a prime number, it would have been required that 147 216 has only two divisors, i.e., itself and 1.
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147 216 is an even number, because it is evenly divisible by 2: 147 216 / 2 = 73 608.
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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 147 216 is about 383.687.
Thus, the square root of 147 216 is not an integer, and therefore 147 216 is not a square number.
The square of a number (here 147 216) is the result of the product of this number (147 216) by itself (i.e., 147 216 × 147 216); the square of 147 216 is sometimes called "raising 147 216 to the power 2", or "147 216 squared".
The square of 147 216 is 21 672 550 656 because 147 216 × 147 216 = 147 2162 = 21 672 550 656.
As a consequence, 147 216 is the square root of 21 672 550 656.
The multiples of 147 216 are all integers evenly divisible by 147 216, that is all numbers such that the remainder of the division by 147 216 is zero. There are infinitely many multiples of 147 216. The smallest multiples of 147 216 are: