It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 137 298 is not a prime number.
For example, 137 298 can be divided by 2: 137 298 / 2 = 68 649.
For 137 298 to be a prime number, it would have been required that 137 298 has only two divisors, i.e., itself and 1.
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137 298 is an even number, because it is evenly divisible by 2: 137 298 / 2 = 68 649.
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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 137 298 is about 370.537.
Thus, the square root of 137 298 is not an integer, and therefore 137 298 is not a square number.
The square of a number (here 137 298) is the result of the product of this number (137 298) by itself (i.e., 137 298 × 137 298); the square of 137 298 is sometimes called "raising 137 298 to the power 2", or "137 298 squared".
The square of 137 298 is 18 850 740 804 because 137 298 × 137 298 = 137 2982 = 18 850 740 804.
As a consequence, 137 298 is the square root of 18 850 740 804.
The multiples of 137 298 are all integers evenly divisible by 137 298, that is all numbers such that the remainder of the division by 137 298 is zero. There are infinitely many multiples of 137 298. The smallest multiples of 137 298 are: