| Date | User | Challenge | Score |
| Hajra6 | Legendre Symbol | 35 | |
| mjm19 | Modular Arithmetic 1 | 20 | |
| taki1 | Modular Inverting | 25 | |
| n3k0an | Extended GCD | 20 | |
| Undec1phered | Favourite byte | 20 | |
| Too_hia | Modular Arithmetic 2 | 20 | |
| Too_hia | Modular Arithmetic 1 | 20 | |
| Hajra6 | Quadratic Residues | 25 | |
| mjm19 | Extended GCD | 20 | |
| KBU | Modes of Operation Starter | 15 | |
| Hajra6 | Modular Inverting | 25 | |
| taki1 | Modular Arithmetic 2 | 20 | |
| n3k0an | Greatest Common Divisor | 15 | |
| JunhyeongShin | Background Reading | 5 | |
| Too_hia | Extended GCD | 20 | |
| taki1 | Modular Arithmetic 1 | 20 | |
| Hajra6 | Modular Arithmetic 2 | 20 | |
| CYDF1121 | Efficient Exchange | 50 | |
| Nature | ASCII | 5 | |
| Hajra6 | Modular Arithmetic 1 | 20 | |
| KBU | Resisting Bruteforce | 10 | |
| Hajra6 | Extended GCD | 20 | |
| mjm19 | Greatest Common Divisor | 15 | |
| Hajra6 | Greatest Common Divisor | 15 | |
| gnouma | Quadratic Residues | 25 | |
| Hajra6 | You either know, XOR you don't | 30 | |
| Too_hia | Greatest Common Divisor | 15 | |
| Hajra6 | Favourite byte | 20 | |
| Hajra6 | XOR Properties | 15 | |
| Hajra6 | XOR Starter | 10 | |
| Hajra6 | Bytes and Big Integers | 10 | |
| Hajra6 | Base64 | 10 | |
| cpbcpb | Great Snakes | 3 | |
| Hajra6 | Hex | 5 | |
| Undec1phered | XOR Properties | 15 | |
| Firalis | Public Keys | 15 | |
| Hajra6 | ASCII | 5 | |
| Hajra6 | Great Snakes | 3 | |
| Hajra6 | Finding Flags | 2 | |
| rayburn | Finding Flags | 2 | |
| gnouma | Modular Inverting | 25 | |
| Firalis | Modular Exponentiation | 10 | |
| taki1 | Extended GCD | 20 | |
| Kastrati | Great Snakes | 3 | |
| CYDF1121 | Curves and Logs | 40 | |
| ForJ | The Good, The Pad, The Ugly | 100 | |
| jgi | Finding Flags | 2 | |
| sasytaco802 | Hash Stuffing | 50 | |
| cpbcpb | Finding Flags | 2 | |
| RAVEN_031 | Elliptic Nodes | 150 |
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