| Date | User | Challenge | Score |
| ak2407 | Legendre Symbol | 35 | |
| ironore15 | CERTainly not | 30 | |
| WhynoRhino | Modular Exponentiation | 10 | |
| ironore15 | Lemur XOR | 40 | |
| FrogMan | You either know, XOR you don't | 30 | |
| FrogMan | Favourite byte | 20 | |
| FrogMan | XOR Properties | 15 | |
| ctfuzername | Background Reading | 5 | |
| FrogMan | XOR Starter | 10 | |
| FrogMan | Bytes and Big Integers | 10 | |
| newToThis25 | Favourite byte | 20 | |
| Cryptoid | You either know, XOR you don't | 30 | |
| ipressma | Triple DES | 60 | |
| SreehariNair | You either know, XOR you don't | 30 | |
| WhynoRhino | Modular Binomials | 80 | |
| newToThis25 | XOR Properties | 15 | |
| ak2407 | Quadratic Residues | 25 | |
| WhynoRhino | Adrien's Signs | 80 | |
| ak2407 | Modular Inverting | 25 | |
| ak2407 | Modular Arithmetic 2 | 20 | |
| ak2407 | Modular Arithmetic 1 | 20 | |
| ak2407 | Extended GCD | 20 | |
| ak2407 | Greatest Common Divisor | 15 | |
| newToThis25 | XOR Starter | 10 | |
| ak2407 | You either know, XOR you don't | 30 | |
| ak2407 | Favourite byte | 20 | |
| WhynoRhino | Chinese Remainder Theorem | 40 | |
| WhynoRhino | Modular Square Root | 35 | |
| WhynoRhino | Legendre Symbol | 35 | |
| ak2407 | XOR Properties | 15 | |
| WhynoRhino | Quadratic Residues | 25 | |
| ak2407 | XOR Starter | 10 | |
| ak2407 | Bytes and Big Integers | 10 | |
| WhynoRhino | Modular Inverting | 25 | |
| WhynoRhino | Modular Arithmetic 2 | 20 | |
| FrogMan | Base64 | 10 | |
| WhynoRhino | Modular Arithmetic 1 | 20 | |
| sqv1nx | Base64 | 10 | |
| WhynoRhino | Extended GCD | 20 | |
| WhynoRhino | Greatest Common Divisor | 15 | |
| WyattZhang | Parameter Injection | 60 | |
| SreehariNair | Favourite byte | 20 | |
| ak2407 | Base64 | 10 | |
| kevinwang | Export-grade | 100 | |
| WhynoRhino | You either know, XOR you don't | 30 | |
| ak2407 | Hex | 5 | |
| SreehariNair | XOR Properties | 15 | |
| WhynoRhino | Favourite byte | 20 | |
| cephalobop | Bytes and Big Integers | 10 | |
| ak2407 | ASCII | 5 |
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