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发帖数: 1177 | 1 一个不能完全算民科的人发的，有数学的PHD，不过不是数论方向的。
Have you come across any of the following conjectures?
P1 primes of the kind 4k+1 5,13,17,29, ... 193,197, ...
P3 primes of the kind 4k+3 3,7,11,19, ... 163,167, ...
C1 composites with all factors from P1 25,65,85,125, ... 481,485, ...
C3 composites with all factors from P3 9,21,27,33, ... 207,209, ...
1. If N is a number then there is an n > N so that both n and n+4 are in P1.
2. If N is a number then there is an n > N so that both n and n+4 are in P3.
3. If N is a number then there is an n > N so that both n and n+4 are in C1.
4. If N is a number then there is an n > N so that both n and n+2 are in C3
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