3 | 5 | 17 | 257 | 65537 |
3 | = 220 + 1 | prime number |
5 | = 221 + 1 | prime number |
17 | = 222 + 1 | prime number |
257 | = 223 + 1 | prime number |
65537 | = 224 + 1 | prime number |
4294967297 | = 225 + 1 | = 641 * 6700417 |
18446744073709551617 | = 226 + 1 | = 274177 * 67280421310721 |
340282366920938463463374607431768211457 | = 227 + 1 | = 59649589127497217 * 5704689200685129054721 |