| Date | User | Challenge | Score |
| sk3pt1c | Crossed Wires | 100 | |
| kokoko51 | Greatest Common Divisor | 15 | |
| panda_ghost | Greatest Common Divisor | 15 | |
| sk3pt1c | Everything is Big | 70 | |
| sk3pt1c | Modulus Inutilis | 50 | |
| sk3pt1c | Salty | 20 | |
| sk3pt1c | Manyprime | 40 | |
| sk3pt1c | Square Eyes | 35 | |
| sk3pt1c | Monoprime | 30 | |
| sk3pt1c | Inferius Prime | 30 | |
| sk3pt1c | Factoring | 15 | |
| yassine__aaf | Favourite byte | 20 | |
| TodaylunchRamen | Working with Fields | 10 | |
| sk3pt1c | RSA Signatures | 25 | |
| realeyesrealizer | Greatest Common Divisor | 15 | |
| PancakeLlama | Bean Counter | 60 | |
| francomunda | Finding Flags | 2 | |
| LucaMaguire81 | Base64 | 10 | |
| doneyit413 | Adrien's Signs | 80 | |
| LucaMaguire81 | Hex | 5 | |
| siancec | Bringing It All Together | 50 | |
| LucaMaguire81 | ASCII | 5 | |
| LucaMaguire81 | Great Snakes | 3 | |
| dextercos | Hex | 5 | |
| doneyit413 | Chinese Remainder Theorem | 40 | |
| LucaMaguire81 | Finding Flags | 2 | |
| Ch1ko1 | Quadratic Residues | 25 | |
| dextercos | ASCII | 5 | |
| doneyit413 | Modular Square Root | 35 | |
| Ch1ko1 | Modular Inverting | 25 | |
| Ch1ko1 | Modular Arithmetic 2 | 20 | |
| Ch1ko1 | Modular Arithmetic 1 | 20 | |
| dextercos | Great Snakes | 3 | |
| Ch1ko1 | Extended GCD | 20 | |
| xrysh_karelia | Efficient Exchange | 50 | |
| Ch1ko1 | Greatest Common Divisor | 15 | |
| arktzi | You either know, XOR you don't | 30 | |
| xrysh_karelia | Curves and Logs | 40 | |
| doneyit413 | Legendre Symbol | 35 | |
| souames99 | Finding Flags | 2 | |
| siancec | Diffusion through Permutation | 30 | |
| imlowkeyboardrn | You either know, XOR you don't | 30 | |
| imlowkeyboardrn | Favourite byte | 20 | |
| realeyesrealizer | You either know, XOR you don't | 30 | |
| doneyit413 | Quadratic Residues | 25 | |
| imlowkeyboardrn | XOR Properties | 15 | |
| frankn | Modular Binomials | 80 | |
| doneyit413 | Modular Inverting | 25 | |
| siancec | Confusion through Substitution | 25 | |
| doneyit413 | Modular Arithmetic 2 | 20 |
You are now level Current level