Impolite: a number that cannot be expressed as the sum of at least two consecutive natural numbers. more
The impolite numbers up to 10
15 :
1,
2,
4,
8,
16,
32,
64,
128,
256,
512,
1024,
2048,
4096,
8192,
16384,
32768,
65536,
131072,
262144,
524288,
1048576,
2097152,
4194304,
8388608,
16777216,
33554432,
67108864,
134217728,
268435456,
536870912,
1073741824,
2147483648,
4294967296,
8589934592,
17179869184,
34359738368,
68719476736,
137438953472,
274877906944,
549755813888,
1099511627776,
2199023255552,
4398046511104,
8796093022208,
17592186044416,
35184372088832,
70368744177664,
140737488355328,
281474976710656,
562949953421312.
Distribution of the remainders when the numbers in this family are divided by n=2, 3,..., 11. (I took into account 50 values, from 1 to 562949953421312).
n\r | 0 | 1 |
2 | 49 | 1 | 2 |
3 | 0 | 25 | 25 | 3 |
4 | 48 | 1 | 1 | 0 | 4 |
5 | 0 | 13 | 13 | 12 | 12 | 5 |
6 | 0 | 1 | 25 | 0 | 24 | 0 | 6 |
7 | 0 | 17 | 17 | 0 | 16 | 0 | 0 | 7 |
8 | 47 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 8 |
9 | 0 | 9 | 9 | 0 | 8 | 8 | 0 | 8 | 8 | 9 |
10 | 0 | 1 | 13 | 0 | 12 | 0 | 12 | 0 | 12 | 0 | 10 |
11 | 0 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
A pictorial representation of the table above
Imagine to divide the members of this family by a number n and compute the remainders. Should they be uniformly distributed, each remainder from 0 to n-1 would be obtained in about (1/n)-th of the cases. This outcome is represented by a white square. Reddish (resp. bluish) squares represent remainders which appear more (resp. less) frequently than 1/n.