| Date | User | Challenge | Score |
| rmn_bm | Background Reading | 5 | |
| Skinny | Modular Arithmetic 1 | 20 | |
| cristobal | Finding Flags | 2 | |
| hollowfade | Finding Flags | 2 | |
| k1ll3r_t01 | Signing Server | 60 | |
| gbradshaw52 | Great Snakes | 3 | |
| pin3apple07 | ProSign 3 | 100 | |
| gbradshaw52 | Finding Flags | 2 | |
| vietanh | Hex | 5 | |
| vluux | Modular Exponentiation | 10 | |
| nwal | XOR Properties | 15 | |
| netdemon | Resisting Bruteforce | 10 | |
| netdemon | Keyed Permutations | 5 | |
| s4nch0 | Extended GCD | 20 | |
| Ah_Crypto2 | Square Eyes | 35 | |
| Ah_Crypto2 | Inferius Prime | 30 | |
| Ah_Crypto2 | Everything is Big | 70 | |
| fast_learner321 | Base64 | 10 | |
| ZacLawliet | Finding Flags | 2 | |
| SneakySedano | Salty | 20 | |
| DePoAl | Bytes and Big Integers | 10 | |
| Nama_867 | Great Snakes | 3 | |
| k1ll3r_t01 | Square Eyes | 35 | |
| k1ll3r_t01 | Monoprime | 30 | |
| k1ll3r_t01 | Inferius Prime | 30 | |
| k1ll3r_t01 | Factoring | 15 | |
| fast_learner321 | Hex | 5 | |
| kt3001 | Great Snakes | 3 | |
| hcrypt | Chinese Remainder Theorem | 40 | |
| fast_learner321 | ASCII | 5 | |
| kt3001 | Finding Flags | 2 | |
| ShadowRich | Modular Inverting | 25 | |
| hcrypt | Modular Square Root | 35 | |
| Nama_867 | Finding Flags | 2 | |
| hcrypt | Legendre Symbol | 35 | |
| SneakySedano | Manyprime | 40 | |
| Ck3y | You either know, XOR you don't | 30 | |
| DePoAl | Base64 | 10 | |
| nwal | XOR Starter | 10 | |
| 4wutKall | Structure of AES | 15 | |
| hcrypt | Quadratic Residues | 25 | |
| hcrypt | Modular Inverting | 25 | |
| hcrypt | Modular Arithmetic 2 | 20 | |
| SneakySedano | Monoprime | 30 | |
| Kotoha | Modular Arithmetic 2 | 20 | |
| hcrypt | Modular Arithmetic 1 | 20 | |
| hcrypt | Extended GCD | 20 | |
| hcrypt | Greatest Common Divisor | 15 | |
| Ck3y | Favourite byte | 20 | |
| hcrypt | You either know, XOR you don't | 30 |
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