1609is an odd number,as it is not divisible by 2
The factors for 1609 are all the numbers between -1609 and 1609 , which divide 1609 without leaving any remainder. Since 1609 divided by -1609 is an integer, -1609 is a factor of 1609 .
Since 1609 divided by -1609 is a whole number, -1609 is a factor of 1609
Since 1609 divided by -1 is a whole number, -1 is a factor of 1609
Multiples of 1609 are all integers divisible by 1609 , i.e. the remainder of the full division by 1609 is zero. There are infinite multiples of 1609. The smallest multiples of 1609 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 1609, the answer is: yes, 1609 is a prime number because it only has two different divisors: 1 and itself (1609).
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 1609). 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 40.112 ). 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: 1607
Next prime number: 1613