| Date | User | Challenge | Score |
| Anthen | Modular Inverting | 25 | |
| waleedziad | Factoring | 15 | |
| Praket | Chinese Remainder Theorem | 40 | |
| Almarx | Great Snakes | 3 | |
| Anthen | Modular Arithmetic 2 | 20 | |
| xth_student | Extended GCD | 20 | |
| VAKAKIS | RSA Decryption | 20 | |
| Konstantinos_Ch | JWT Sessions | 10 | |
| Anthen | Modular Arithmetic 1 | 20 | |
| Almarx | Finding Flags | 2 | |
| MiBrown | Legendre Symbol | 35 | |
| shark47 | Quadratic Residues | 25 | |
| Anthen | Extended GCD | 20 | |
| youngCrypto | Quadratic Residues | 25 | |
| Zgap | Greatest Common Divisor | 15 | |
| ThrillByte | Triple DES | 60 | |
| erR0rr0Rre | Efficient Exchange | 50 | |
| Konstantinos_Ch | Decrypting TLS 1.3 | 35 | |
| VAKAKIS | Private Keys | 20 | |
| smallwood_s | You either know, XOR you don't | 30 | |
| pngt_karg | Quadratic Residues | 25 | |
| ikid | Modular Arithmetic 2 | 20 | |
| VAKAKIS | Euler's Totient | 20 | |
| Jankoseu | Unencryptable | 125 | |
| Sharon_46616 | Hex | 5 | |
| shark47 | Modular Inverting | 25 | |
| pngt_karg | Modular Inverting | 25 | |
| Jankoseu | Roll your Own | 125 | |
| Sharon_46616 | ASCII | 5 | |
| shark47 | Modular Arithmetic 2 | 20 | |
| ro547 | XOR Starter | 10 | |
| shark47 | Modular Arithmetic 1 | 20 | |
| pngt_karg | Modular Arithmetic 2 | 20 | |
| Konstantinos_Ch | Decrypting TLS 1.2 | 30 | |
| mpg | RSA Signatures | 25 | |
| GIMJONGUN | Hex | 5 | |
| Level83 | Favourite byte | 20 | |
| ro547 | Encoding Challenge | 40 | |
| Skeletong | Base64 | 10 | |
| ikid | Modular Arithmetic 1 | 20 | |
| Skarn | Flipping Cookie | 60 | |
| Skeletong | Hex | 5 | |
| Skeletong | ASCII | 5 | |
| mpg | Factoring | 15 | |
| pngt_karg | Modular Arithmetic 1 | 20 | |
| Skeletong | Great Snakes | 3 | |
| Skeletong | Finding Flags | 2 | |
| davidhbookclub | Factoring | 15 | |
| Aryaethn | Crossed Wires | 100 | |
| pngt_karg | Extended GCD | 20 |
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