| Date | User | Challenge | Score |
| Nayrolf97 | You either know, XOR you don't | 30 | |
| ellieh | Modular Exponentiation | 10 | |
| shristi_1302 | ASCII | 5 | |
| mrgeek | ASCII | 5 | |
| lingling | Modulus Inutilis | 50 | |
| silentRoar | Resisting Bruteforce | 10 | |
| Turan2012 | ASCII | 5 | |
| ellieh | Modular Binomials | 80 | |
| ederby24 | Bytes and Big Integers | 10 | |
| ellieh | Adrien's Signs | 80 | |
| cyborgsmetalhalf | Chinese Remainder Theorem | 40 | |
| drzejus | JWT Sessions | 10 | |
| piyx | Bytes and Big Integers | 10 | |
| ellieh | Chinese Remainder Theorem | 40 | |
| mrgeek | Great Snakes | 3 | |
| ellieh | Modular Square Root | 35 | |
| shristi_1302 | Finding Flags | 2 | |
| drzejus | Token Appreciation | 5 | |
| ellieh | Legendre Symbol | 35 | |
| ChokosOS | Token Appreciation | 5 | |
| shokhba | Finding Flags | 2 | |
| Turan2012 | Great Snakes | 3 | |
| lingling | Salty | 20 | |
| VulnScythe | Base64 | 10 | |
| ellieh | Quadratic Residues | 25 | |
| ChokosOS | Network Attacks | 5 | |
| ellieh | Modular Inverting | 25 | |
| ellieh | Modular Arithmetic 2 | 20 | |
| Aeneas7 | CTRIME | 70 | |
| ellieh | Modular Arithmetic 1 | 20 | |
| siancec | Oh SNAP | 120 | |
| RS25 | Adrien's Signs | 80 | |
| silentRoar | Keyed Permutations | 5 | |
| cyborgsmetalhalf | Modular Square Root | 35 | |
| Turan2012 | Finding Flags | 2 | |
| Cowkim | Modular Square Root | 35 | |
| VulnScythe | Hex | 5 | |
| nullex | Bytes and Big Integers | 10 | |
| MadHammer | Bytes and Big Integers | 10 | |
| Malekith | RSA Signatures | 25 | |
| Malekith | Private Keys | 20 | |
| Malekith | Euler's Totient | 20 | |
| Malekith | Public Keys | 15 | |
| VulnScythe | ASCII | 5 | |
| oscarpf | Base64 | 10 | |
| oscarpf | Hex | 5 | |
| missinguser33 | Modular Inverting | 25 | |
| MadHammer | Base64 | 10 | |
| lingling | Manyprime | 40 | |
| VulnScythe | Great Snakes | 3 |
You are now level Current level