In addition we can say of the number 1994 that it is even
1994 is an even number, as it is divisible by 2 : 1994/2 = 997
The factors for 1994 are all the numbers between -1994 and 1994 , which divide 1994 without leaving any remainder. Since 1994 divided by -1994 is an integer, -1994 is a factor of 1994 .
Since 1994 divided by -1994 is a whole number, -1994 is a factor of 1994
Since 1994 divided by -997 is a whole number, -997 is a factor of 1994
Since 1994 divided by -2 is a whole number, -2 is a factor of 1994
Since 1994 divided by -1 is a whole number, -1 is a factor of 1994
Multiples of 1994 are all integers divisible by 1994 , i.e. the remainder of the full division by 1994 is zero. There are infinite multiples of 1994. The smallest multiples of 1994 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 1994, the answer is: No, 1994 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 1994). 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 44.654 ). 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: 1993
Next prime number: 1997