| Date | User | Challenge | Score |
| leikan | Adrien's Signs | 80 | |
| anhsaoleloi | Computing Public Values | 25 | |
| tasha_K | Quadratic Residues | 25 | |
| nataliexsalome | Modular Binomials | 80 | |
| tasha_K | Modular Inverting | 25 | |
| tasha_K | Modular Arithmetic 2 | 20 | |
| nataliexsalome | Adrien's Signs | 80 | |
| tasha_K | Modular Arithmetic 1 | 20 | |
| tasha_K | Extended GCD | 20 | |
| ShadhinIslam7126 | Modulus Inutilis | 50 | |
| tasha_K | Greatest Common Divisor | 15 | |
| qduzsj | Base64 | 10 | |
| qduzsj | Hex | 5 | |
| snowwit | Encoding Challenge | 40 | |
| qduzsj | ASCII | 5 | |
| qduzsj | Great Snakes | 3 | |
| Ultrametric | Base64 | 10 | |
| nataliexsalome | Chinese Remainder Theorem | 40 | |
| anhsaoleloi | Generators of Groups | 20 | |
| qduzsj | Finding Flags | 2 | |
| nataliexsalome | Modular Square Root | 35 | |
| Ultrametric | Hex | 5 | |
| abdul1069 | XOR Starter | 10 | |
| Ultrametric | ASCII | 5 | |
| Ultrametric | Great Snakes | 3 | |
| Ultrametric | Finding Flags | 2 | |
| B1uz3 | Favourite byte | 20 | |
| EveN | Lemur XOR | 40 | |
| ITG007 | Base64 | 10 | |
| B1uz3 | XOR Properties | 15 | |
| ITG007 | Hex | 5 | |
| B1uz3 | XOR Starter | 10 | |
| abdul1069 | Bytes and Big Integers | 10 | |
| MrDn139 | Hex | 5 | |
| myrkraverk | Background Reading | 5 | |
| B1uz3 | Bytes and Big Integers | 10 | |
| B1uz3 | Base64 | 10 | |
| phat1911 | What's a Lattice? | 40 | |
| B1uz3 | Hex | 5 | |
| 404page | Transparency | 50 | |
| B1uz3 | ASCII | 5 | |
| 404page | SSH Keys | 35 | |
| B1uz3 | Great Snakes | 3 | |
| B1uz3 | Finding Flags | 2 | |
| Josgacor | Favourite byte | 20 | |
| HumanHumanName | Chinese Remainder Theorem | 40 | |
| lll111 | Modular Binomials | 80 | |
| kathleenah | Modular Square Root | 35 | |
| M1D0R1M4 | Encoding Challenge | 40 | |
| shadyy | Network Attacks | 5 |
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