| Date | User | Challenge | Score |
| one_fish | Modular Arithmetic 2 | 20 | |
| constant | Bytes and Big Integers | 10 | |
| kabanchik_07 | Modulus Inutilis | 50 | |
| youusseeff | Favourite byte | 20 | |
| welder | XOR Properties | 15 | |
| ophir66 | Keyed Permutations | 5 | |
| CYDF1121 | Passwords as Keys | 50 | |
| one_fish | Modular Arithmetic 1 | 20 | |
| one_fish | Extended GCD | 20 | |
| kabanchik_07 | Salty | 20 | |
| Literator | Modular Inverting | 25 | |
| Literator | Modular Arithmetic 2 | 20 | |
| Literator | Modular Arithmetic 1 | 20 | |
| Eshalfatima05 | Modular Binomials | 80 | |
| Literator | Extended GCD | 20 | |
| welder | XOR Starter | 10 | |
| Eshalfatima05 | Adrien's Signs | 80 | |
| Eshalfatima05 | Chinese Remainder Theorem | 40 | |
| Eshalfatima05 | Modular Square Root | 35 | |
| Jnove | Modular Inverting | 25 | |
| Eshalfatima05 | Legendre Symbol | 35 | |
| samlev | ECB Oracle | 60 | |
| BIGBUG | Encoding Challenge | 40 | |
| Eshalfatima05 | Quadratic Residues | 25 | |
| Eshalfatima05 | Modular Inverting | 25 | |
| turekkerem | Quadratic Residues | 25 | |
| Eshalfatima05 | Modular Arithmetic 2 | 20 | |
| Eshalfatima05 | Modular Arithmetic 1 | 20 | |
| Eshalfatima05 | Extended GCD | 20 | |
| Eshalfatima05 | Greatest Common Divisor | 15 | |
| highwayhike | Bytes and Big Integers | 10 | |
| turekkerem | Modular Inverting | 25 | |
| Riksaboy91 | Favourite byte | 20 | |
| turekkerem | Modular Arithmetic 2 | 20 | |
| turekkerem | Modular Arithmetic 1 | 20 | |
| turekkerem | Extended GCD | 20 | |
| Kshiraja | Bytes and Big Integers | 10 | |
| Elisha167004 | Monoprime | 30 | |
| Elisha167004 | Factoring | 15 | |
| bettfin | Deriving Symmetric Keys | 40 | |
| highwayhike | Base64 | 10 | |
| tanuiivy1 | Bean Counter | 60 | |
| highwayhike | Hex | 5 | |
| Jnove | Modular Arithmetic 2 | 20 | |
| tanuiivy1 | Export-grade | 100 | |
| Elisha167004 | RSA Signatures | 25 | |
| tanuiivy1 | Parameter Injection | 60 | |
| tanuiivy1 | Deriving Symmetric Keys | 40 | |
| tanuiivy1 | Computing Shared Secrets | 30 | |
| tanuiivy1 | Computing Public Values | 25 |
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