| Date | User | Challenge | Score |
| bketoto | Hex | 5 | |
| lll111 | Inferius Prime | 30 | |
| DanKyz | Private Keys | 20 | |
| sciwhiz12 | Modular Arithmetic 2 | 20 | |
| DanKyz | Euler's Totient | 20 | |
| Zxx | XOR Starter | 10 | |
| sciwhiz12 | Modular Arithmetic 1 | 20 | |
| Wisdom_doom | Symmetry | 50 | |
| sciwhiz12 | Extended GCD | 20 | |
| kevinnguyen | XOR Starter | 10 | |
| bketoto | ASCII | 5 | |
| NOAHJY | ASCII | 5 | |
| sciwhiz12 | Greatest Common Divisor | 15 | |
| Kazee | Quadratic Residues | 25 | |
| loserlesbian64 | Base64 | 10 | |
| loserlesbian64 | Hex | 5 | |
| DanKyz | Generators of Groups | 20 | |
| DanKyz | Working with Fields | 10 | |
| loserlesbian64 | ASCII | 5 | |
| NOAHJY | Great Snakes | 3 | |
| DanKyz | RSA Decryption | 20 | |
| bketoto | Great Snakes | 3 | |
| loserlesbian64 | Great Snakes | 3 | |
| sciwhiz12 | You either know, XOR you don't | 30 | |
| NOAHJY | Finding Flags | 2 | |
| sciwhiz12 | Favourite byte | 20 | |
| loserlesbian64 | Finding Flags | 2 | |
| uzukhai | Extended GCD | 20 | |
| DanKyz | Public Keys | 15 | |
| Wisdom_doom | Flipping Cookie | 60 | |
| DanKyz | Modular Exponentiation | 10 | |
| sciwhiz12 | XOR Properties | 15 | |
| Kazee | Modular Inverting | 25 | |
| h4fun0x | You either know, XOR you don't | 30 | |
| mboh2 | Let's Decrypt | 80 | |
| sciwhiz12 | XOR Starter | 10 | |
| sciwhiz12 | Bytes and Big Integers | 10 | |
| sciwhiz12 | Base64 | 10 | |
| sciwhiz12 | Hex | 5 | |
| sciwhiz12 | ASCII | 5 | |
| sciwhiz12 | Great Snakes | 3 | |
| sciwhiz12 | Finding Flags | 2 | |
| psvm10v | Hex | 5 | |
| psvm10v | ASCII | 5 | |
| Kazee | Modular Arithmetic 2 | 20 | |
| uzukhai | Greatest Common Divisor | 15 | |
| dandisubhani | RSA Decryption | 20 | |
| dandisubhani | Private Keys | 20 | |
| dandisubhani | Euler's Totient | 20 | |
| dandisubhani | Public Keys | 15 |
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