1977is an odd number,as it is not divisible by 2
The factors for 1977 are all the numbers between -1977 and 1977 , which divide 1977 without leaving any remainder. Since 1977 divided by -1977 is an integer, -1977 is a factor of 1977 .
Since 1977 divided by -1977 is a whole number, -1977 is a factor of 1977
Since 1977 divided by -659 is a whole number, -659 is a factor of 1977
Since 1977 divided by -3 is a whole number, -3 is a factor of 1977
Since 1977 divided by -1 is a whole number, -1 is a factor of 1977
Since 1977 divided by 1 is a whole number, 1 is a factor of 1977
Since 1977 divided by 3 is a whole number, 3 is a factor of 1977
Since 1977 divided by 659 is a whole number, 659 is a factor of 1977
Multiples of 1977 are all integers divisible by 1977 , i.e. the remainder of the full division by 1977 is zero. There are infinite multiples of 1977. The smallest multiples of 1977 are:
0 : in fact, 0 is divisible by any integer, so it is also a multiple of 1977 since 0 × 1977 = 0
1977 : in fact, 1977 is a multiple of itself, since 1977 is divisible by 1977 (it was 1977 / 1977 = 1, so the rest of this division is zero)
3954: in fact, 3954 = 1977 × 2
5931: in fact, 5931 = 1977 × 3
7908: in fact, 7908 = 1977 × 4
9885: in fact, 9885 = 1977 × 5
etc.
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 1977, the answer is: No, 1977 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 1977). 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 44.463 ). 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 Numbers: ... 1975, 1976
Previous prime number: 1973
Next prime number: 1979