- #1
Janosh89
- 61
- 19
- TL;DR Summary
- If the expression 2 x (12n+9) +1 has no prime factors of the form
4k+1 where k>0 , then 2^(12n+9)+1 is necessarily divisible by 24n+19.
Is this provable ?
It seems to hold true ..
n | factor(s) of (24n+19) | (24n+19) divides 2(12n+9)+1 ? |
0 | 19 | YES |
1 | 43 | YES |
2 | 67 | YES |
3 | 7, 13 | NO |
4 | 23, 5 | NO |
5 | 139 | YES |
6 | 163 | YES |
7 | 11, 17 | NO |
8 | 211 | YES |
9 | 47, 5 | NO |
10 | 7, 37 | NO |
11 | 283 | YES |