| Date | User | Challenge | Score |
| B00177171 | Inferius Prime | 30 | |
| Janek0 | Working with Fields | 10 | |
| alisa | Monoprime | 30 | |
| B00177171 | Factoring | 15 | |
| zhangzw0170 | Modular Inverting | 25 | |
| absimaman | Favourite byte | 20 | |
| zhangzw0170 | Modular Arithmetic 2 | 20 | |
| alisa | Inferius Prime | 30 | |
| Patonymous | Script Kiddie | 70 | |
| uzer503 | Base64 | 10 | |
| samba | Favourite byte | 20 | |
| daanaaa | XOR Properties | 15 | |
| Skeletong | Modular Arithmetic 1 | 20 | |
| alisa | Factoring | 15 | |
| GhostMilk | Favourite byte | 20 | |
| GhostMilk | XOR Properties | 15 | |
| m0h1th | Nativity | 60 | |
| Skeletong | Extended GCD | 20 | |
| GhostMilk | XOR Starter | 10 | |
| absimaman | XOR Properties | 15 | |
| GhostMilk | Bytes and Big Integers | 10 | |
| zhangzw0170 | Modular Arithmetic 1 | 20 | |
| GhostMilk | Base64 | 10 | |
| zhangzw0170 | Extended GCD | 20 | |
| Ranya | Lemur XOR | 40 | |
| xinyi_y | LWE Intro | 10 | |
| patrick | Three Isogenies | 35 | |
| MajorFalleN | CTRIME | 70 | |
| GhostMilk | Hex | 5 | |
| Gogox0 | Background Reading | 5 | |
| xinyi_y | LWE Background | 5 | |
| MidoS3d | Everything is Big | 70 | |
| 0rr0 | Background Reading | 5 | |
| GhostMilk | ASCII | 5 | |
| toto123456 | Prime and Prejudice | 200 | |
| MajorFalleN | Bean Counter | 60 | |
| GhostMilk | Great Snakes | 3 | |
| absimaman | XOR Starter | 10 | |
| MajorFalleN | Symmetry | 50 | |
| zhangzw0170 | Greatest Common Divisor | 15 | |
| alexctf | Lemur XOR | 40 | |
| hedge_hedgehog | Greatest Common Divisor | 15 | |
| zhangzw0170 | You either know, XOR you don't | 30 | |
| Prv_88 | Greatest Common Divisor | 15 | |
| GhostMilk | Finding Flags | 2 | |
| markanie | Resisting Bruteforce | 10 | |
| naivecat | XOR Starter | 10 | |
| markanie | Keyed Permutations | 5 | |
| Mahmoud7 | Finding Flags | 2 | |
| naivecat | Bytes and Big Integers | 10 |
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