In addition we can say of the number 98 that it is even
98 is an even number, as it is divisible by 2 : 98/2 = 49
The factors for 98 are all the numbers between -98 and 98 , which divide 98 without leaving any remainder. Since 98 divided by -98 is an integer, -98 is a factor of 98 .
Since 98 divided by -98 is a whole number, -98 is a factor of 98
Since 98 divided by -49 is a whole number, -49 is a factor of 98
Since 98 divided by -14 is a whole number, -14 is a factor of 98
Since 98 divided by -7 is a whole number, -7 is a factor of 98
Since 98 divided by -2 is a whole number, -2 is a factor of 98
Since 98 divided by -1 is a whole number, -1 is a factor of 98
Multiples of 98 are all integers divisible by 98 , i.e. the remainder of the full division by 98 is zero. There are infinite multiples of 98. The smallest multiples of 98 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 98, the answer is: No, 98 is not a prime number.
To know the primality of an integer, we can use several algorithms. The most naive is to try all divisors below the number you want to know if it is prime (in our case 98). We can already eliminate even numbers bigger than 2 (then 4 , 6 , 8 ...). Besides, we can stop at the square root of the number in question (here 9.899 ). Historically, the Eratosthenes screen (which dates back to Antiquity) uses this technique relatively effectively.
More modern techniques include the Atkin screen, probabilistic tests, or the cyclotomic test.
Previous prime number: 97
Next prime number: 101