| Date | User | Challenge | Score |
| mnh | Private Keys | 20 | |
| RIFKITW | Everything is Big | 70 | |
| mnh | Euler's Totient | 20 | |
| RIFKITW | Modulus Inutilis | 50 | |
| hamka | Successive Powers | 60 | |
| Kouh | Favourite byte | 20 | |
| RIFKITW | Salty | 20 | |
| RIFKITW | Manyprime | 40 | |
| RIFKITW | Square Eyes | 35 | |
| Kiixzoo | You either know, XOR you don't | 30 | |
| mnh | Public Keys | 15 | |
| RIFKITW | Monoprime | 30 | |
| hamka | Chinese Remainder Theorem | 40 | |
| mnh | Modular Exponentiation | 10 | |
| hamka | Modular Square Root | 35 | |
| mnh | Bean Counter | 60 | |
| mnh | Flipping Cookie | 60 | |
| hamka | Legendre Symbol | 35 | |
| JihanFadhilah | Bytes and Big Integers | 10 | |
| mnh | Symmetry | 50 | |
| RIFKITW | Inferius Prime | 30 | |
| fd | Flipping Cookie | 60 | |
| P3ekaboo | Favourite byte | 20 | |
| hamka | Quadratic Residues | 25 | |
| kiranadea1701 | Symmetry | 50 | |
| The_cryptic | Modular Arithmetic 2 | 20 | |
| hamka | ECB CBC WTF | 55 | |
| Razza | Deriving Symmetric Keys | 40 | |
| QWXXHSX123 | Salty | 20 | |
| mnh | ECB CBC WTF | 55 | |
| hamka | Bringing It All Together | 50 | |
| Razza | Computing Shared Secrets | 30 | |
| hamka | Diffusion through Permutation | 30 | |
| mnh | ECB Oracle | 60 | |
| luispalumbo | Bytes and Big Integers | 10 | |
| mnh | Passwords as Keys | 50 | |
| Razza | Computing Public Values | 25 | |
| lulih | Point Addition | 30 | |
| hamka | Confusion through Substitution | 25 | |
| mnh | Modes of Operation Starter | 15 | |
| P3ekaboo | XOR Properties | 15 | |
| kiranadea1701 | Flipping Cookie | 60 | |
| Razza | Generators of Groups | 20 | |
| mnh | Bringing It All Together | 50 | |
| mnh | Diffusion through Permutation | 30 | |
| Razza | Working with Fields | 10 | |
| kiranadea1701 | ECB CBC WTF | 55 | |
| kiranadea1701 | ECB Oracle | 60 | |
| hamka | Resisting Bruteforce | 10 | |
| Razza | Modulus Inutilis | 50 |
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