| Id | Title | Translations | Solved | ||
|---|---|---|---|---|---|
| 11 | Sum of digits | DE ES RU ZH SK | 13192 | 3.61 | |
| 13 | Weighted sum of digits | DE ES RU ZH SK | 10681 | 3.98 | |
| 17 | Array Checksum | DE ES RU SK | 9387 | 4.20 | |
| 12 | Modulo and time difference | DE ES RU SK | 7679 | 4.55 | |
| 14 | Modular Calculator | ES SK | 7116 | 4.68 | |
| 26 | Greatest Common Divisor | ES SK RU | 6237 | 4.91 | |
| 24 | Neumann's Random Generator | DE ES RU | 4928 | 5.32 | |
| 25 | Linear Congruential Generator | RU | 4293 | 5.56 | |
| 69 | Fibonacci Divisibility | 2006 | 6.88 | ||
| 145 | Modular Exponentiation | 847 | 8.38 | ||
| 71 | Fibonacci Divisibility Advanced | 605 | 8.96 | ||
| 143 | Extended Euclidean Algorithm | 467 | 9.41 | ||
| 144 | Modular Inverse | 301 | 10.17 | ||
| 377 | Sum of Digits Divisibility | 98 | 12.11 | ||
| 152 | RSA Cryptography | 178 | 11.08 | ||
| 148 | Public Key Cryptography Intro | 149 | 11.39 | ||
| 196 | Fibonacci Randomizer | 89 | 12.27 | ||
| 216 | Cracking Linear Congruential Generator | 73 | 12.61 | ||
| 351 | Nicomachus | 34 | 13.91 | ||
| 222 | Easter Eggs Advanced | 22 | 14.64 | ||
| 345 | Elliptic Curves Basics | 9 | 16.09 |