1 and 991
The positive integer factors of 991 are: 1, 991
991 is a prime and so has no proper factors.
991 and 1.991 is a prime number and only has factors of 1 and 991.
Yes, 991 is a prime number. It has no factors other than 1 and itself.
1, 3, 991, 2973
1, 2, 991, 1982
1 + 2 + 991 + 1982 = 2,976
0.0091
sqrt(991) = 31.480 (to 5 sf)
991 is already prime. No tree is required.
To find what must be subtracted from 991 to get 479, you can set up the equation: 991 - x = 479. By rearranging it, you find that x = 991 - 479. Therefore, 512 must be subtracted from 991 to get 479.
991 is a prime number because it has only 2 factors which are itself and one