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42179is an odd number,as it is not divisible by 2
The factors for 42179 are all the numbers between -42179 and 42179 , which divide 42179 without leaving any remainder. Since 42179 divided by -42179 is an integer, -42179 is a factor of 42179 .
Since 42179 divided by -42179 is a whole number, -42179 is a factor of 42179
Since 42179 divided by -1 is a whole number, -1 is a factor of 42179
Since 42179 divided by 1 is a whole number, 1 is a factor of 42179
Multiples of 42179 are all integers divisible by 42179 , i.e. the remainder of the full division by 42179 is zero. There are infinite multiples of 42179. The smallest multiples of 42179 are:
0 : in fact, 0 is divisible by any integer, so it is also a multiple of 42179 since 0 × 42179 = 0
42179 : in fact, 42179 is a multiple of itself, since 42179 is divisible by 42179 (it was 42179 / 42179 = 1, so the rest of this division is zero)
84358: in fact, 84358 = 42179 × 2
126537: in fact, 126537 = 42179 × 3
168716: in fact, 168716 = 42179 × 4
210895: in fact, 210895 = 42179 × 5
etc.
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 42179, the answer is: yes, 42179 is a prime number because it only has two different divisors: 1 and itself (42179).
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 42179). 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 205.375 ). 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.
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