| Date | User | Challenge | Score |
| ankurmitra | Modular Arithmetic 2 | 20 | |
| ankurmitra | Modular Arithmetic 1 | 20 | |
| sophia_evan | Generators of Groups | 20 | |
| sophia_evan | Working with Fields | 10 | |
| sophia_evan | Modulus Inutilis | 50 | |
| lrfy3347 | Great Snakes | 3 | |
| no4h | XOR Starter | 10 | |
| ankurmitra | Extended GCD | 20 | |
| ankurmitra | Greatest Common Divisor | 15 | |
| lrfy3347 | Finding Flags | 2 | |
| ankurmitra | You either know, XOR you don't | 30 | |
| sophia_evan | Salty | 20 | |
| ankurmitra | Favourite byte | 20 | |
| ankurmitra | XOR Properties | 15 | |
| z1g24g | The Good, The Pad, The Ugly | 100 | |
| ankurmitra | XOR Starter | 10 | |
| victoryst | You either know, XOR you don't | 30 | |
| ankurmitra | Bytes and Big Integers | 10 | |
| ankurmitra | Base64 | 10 | |
| sophia_evan | Manyprime | 40 | |
| ankurmitra | Hex | 5 | |
| ankurmitra | ASCII | 5 | |
| Lauren319 | Deriving Symmetric Keys | 40 | |
| ankurmitra | Great Snakes | 3 | |
| n_1009 | Great Snakes | 3 | |
| ankurmitra | Finding Flags | 2 | |
| sophia_evan | Monoprime | 30 | |
| Anouar404 | Bytes and Big Integers | 10 | |
| n_1009 | Finding Flags | 2 | |
| sophia_evan | Factoring | 15 | |
| no4h | Bytes and Big Integers | 10 | |
| sophia_evan | RSA Signatures | 25 | |
| sophia_evan | RSA Decryption | 20 | |
| sophia_evan | Private Keys | 20 | |
| sophia_evan | Euler's Totient | 20 | |
| cerot59 | XOR Starter | 10 | |
| Lauren319 | Computing Shared Secrets | 30 | |
| alisha_sharma14 | Great Snakes | 3 | |
| cerot59 | Bytes and Big Integers | 10 | |
| Lauren319 | Computing Public Values | 25 | |
| alisha_sharma14 | Finding Flags | 2 | |
| Lauren319 | Generators of Groups | 20 | |
| Lauren319 | Working with Fields | 10 | |
| cerot59 | Base64 | 10 | |
| Lauren319 | Modulus Inutilis | 50 | |
| Lauren319 | Salty | 20 | |
| Next0202 | Modular Inverting | 25 | |
| z1g24g | Pad Thai | 80 | |
| Lauren319 | Manyprime | 40 | |
| 0xd3adbe3f | Diffusion through Permutation | 30 |
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