| Date | User | Challenge | Score |
| nad110122 | Greatest Common Divisor | 15 | |
| awaraa | Broken RSA | 100 | |
| Tombiczek | Deriving Symmetric Keys | 40 | |
| nad110122 | You either know, XOR you don't | 30 | |
| jcperez18 | Base64 | 10 | |
| dorusv | XOR Starter | 10 | |
| blazspaca | Modular Square Root | 35 | |
| dorusv | Bytes and Big Integers | 10 | |
| kevin0418 | Base64 | 10 | |
| jcperez18 | Hex | 5 | |
| blazspaca | Legendre Symbol | 35 | |
| Tombiczek | Computing Shared Secrets | 30 | |
| zipill | Private Keys | 20 | |
| xiaoze | Greatest Common Divisor | 15 | |
| kamilkaminski02 | Smooth Criminal | 60 | |
| MusashiCipher | Great Snakes | 3 | |
| Ablo | Finding Flags | 2 | |
| Tombiczek | Computing Public Values | 25 | |
| Tombiczek | Generators of Groups | 20 | |
| Tombiczek | Working with Fields | 10 | |
| dsabolic42 | Generators of Groups | 20 | |
| blazspaca | Quadratic Residues | 25 | |
| dorusv | Base64 | 10 | |
| dorusv | Hex | 5 | |
| dorusv | ASCII | 5 | |
| dorusv | Great Snakes | 3 | |
| dorusv | Finding Flags | 2 | |
| zipill | Euler's Totient | 20 | |
| xiaoze | You either know, XOR you don't | 30 | |
| dsabolic42 | Working with Fields | 10 | |
| NotSkilled | Working with Fields | 10 | |
| nad110122 | Favourite byte | 20 | |
| avners | RSA Backdoor Viability | 175 | |
| blazspaca | Modular Inverting | 25 | |
| teetoamate | Static Client 2 | 120 | |
| blazspaca | Modular Arithmetic 2 | 20 | |
| zipill | Public Keys | 15 | |
| nad110122 | XOR Properties | 15 | |
| kevin0418 | Hex | 5 | |
| blazspaca | Modular Arithmetic 1 | 20 | |
| blazspaca | Extended GCD | 20 | |
| zipill | Modular Exponentiation | 10 | |
| Creafy | The Matrix | 75 | |
| Tsukishima_shiji | Jack's Birthday Hash | 20 | |
| blazspaca | Greatest Common Divisor | 15 | |
| gellyfisher | Modular Square Root | 35 | |
| eliasEndtt | Base64 | 10 | |
| nnarek | Square Eyes | 35 | |
| eliasEndtt | Hex | 5 | |
| kevin0418 | ASCII | 5 |
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