| Date | User | Challenge | Score |
| safwan | Privacy-Enhanced Mail? | 25 | |
| leuge | Legendre Symbol | 35 | |
| NECROTOXIN | Finding Flags | 2 | |
| annieweb | Great Snakes | 3 | |
| safwan | Modular Inverting | 25 | |
| safwan | Modular Arithmetic 2 | 20 | |
| safwan | Modular Arithmetic 1 | 20 | |
| safwan | Extended GCD | 20 | |
| safwan | Greatest Common Divisor | 15 | |
| safwan | Lemur XOR | 40 | |
| proFyn | Bytes and Big Integers | 10 | |
| vermelho | XOR Starter | 10 | |
| That11thHarmonic | RSA Decryption | 20 | |
| annieweb | Finding Flags | 2 | |
| safwan | You either know, XOR you don't | 30 | |
| safwan | Favourite byte | 20 | |
| ved_007 | Script Kiddie | 70 | |
| That11thHarmonic | Private Keys | 20 | |
| safwan | XOR Properties | 15 | |
| That11thHarmonic | Euler's Totient | 20 | |
| v3llocet | You either know, XOR you don't | 30 | |
| BROMIN | RSA Decryption | 20 | |
| safwan | Encoding Challenge | 40 | |
| kubam | Fast Primes | 75 | |
| 0xhunt3r | XOR Starter | 10 | |
| LeonTL | Endless Emails | 150 | |
| Pentaquark | SSH Keys | 35 | |
| X06phy | Favourite byte | 20 | |
| AhmadYar | Modular Arithmetic 2 | 20 | |
| User0069 | Transparency | 50 | |
| safwan | Network Attacks | 5 | |
| mszypere | RSA Backdoor Viability | 175 | |
| kubam | Everything is Big | 70 | |
| BROMIN | Private Keys | 20 | |
| AhmadYar | Modular Arithmetic 1 | 20 | |
| Carixo | Curveball | 100 | |
| Pentaquark | CERTainly not | 30 | |
| Biscotte | Factoring | 15 | |
| ohlo | Let's Decrypt | 80 | |
| Hotaro | Bytes and Big Integers | 10 | |
| mszypere | Ron was Wrong, Whit is Right | 90 | |
| Pentaquark | Privacy-Enhanced Mail? | 25 | |
| mszypere | Fast Primes | 75 | |
| dexter_nate27 | Montgomery's Ladder | 40 | |
| mszypere | Marin's Secrets | 50 | |
| mszypere | Infinite Descent | 50 | |
| 0xhunt3r | Bytes and Big Integers | 10 | |
| v3llocet | Favourite byte | 20 | |
| loafiee | Marin's Secrets | 50 | |
| AhmadYar | Extended GCD | 20 |
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