1345is an odd number,as it is not divisible by 2
The factors for 1345 are all the numbers between -1345 and 1345 , which divide 1345 without leaving any remainder. Since 1345 divided by -1345 is an integer, -1345 is a factor of 1345 .
Since 1345 divided by -1345 is a whole number, -1345 is a factor of 1345
Since 1345 divided by -269 is a whole number, -269 is a factor of 1345
Since 1345 divided by -5 is a whole number, -5 is a factor of 1345
Since 1345 divided by -1 is a whole number, -1 is a factor of 1345
Multiples of 1345 are all integers divisible by 1345 , i.e. the remainder of the full division by 1345 is zero. There are infinite multiples of 1345. The smallest multiples of 1345 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 1345, the answer is: No, 1345 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 1345). 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 36.674 ). 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: 1327
Next prime number: 1361