The list of all positive divisors (that is, the list of all integers that divide 22) is as follows :
130 is multiplo of 1
130 is multiplo of 2
130 is multiplo of 5
130 is multiplo of 10
130 is multiplo of 13
130 is multiplo of 26
130 is multiplo of 65
130 has 7 positive divisors
In addition we can say of the number 130 that it is even
130 is an even number, as it is divisible by 2 : 130/2 = 65
The factors for 130 are all the numbers between -130 and 130 , which divide 130 without leaving any remainder. Since 130 divided by -130 is an integer, -130 is a factor of 130 .
Since 130 divided by -130 is a whole number, -130 is a factor of 130
Since 130 divided by -65 is a whole number, -65 is a factor of 130
Since 130 divided by -26 is a whole number, -26 is a factor of 130
Since 130 divided by -13 is a whole number, -13 is a factor of 130
Since 130 divided by -10 is a whole number, -10 is a factor of 130
Since 130 divided by -5 is a whole number, -5 is a factor of 130
Since 130 divided by -2 is a whole number, -2 is a factor of 130
Since 130 divided by -1 is a whole number, -1 is a factor of 130
Multiples of 130 are all integers divisible by 130 , i.e. the remainder of the full division by 130 is zero. There are infinite multiples of 130. The smallest multiples of 130 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 130, the answer is: No, 130 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 130). 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 11.402 ). 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: 127
Next prime number: 131