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Today's Problem


Solve one problem each day

Sunday, 18 november 2012

prime

Proposed by catanedelcuOffline
(21 comments)19.779 times displayed

gasiti numerele  de forma ABC , prime cu urmatoarele proprietati:

- A, B, C sunt distincte
- AB si BC sunt numere prime deasemenea
- numarul nu contine cifra 9
- daca aranjam in ordine crescatoare cifrele A, B, C obtinem tot un numar prim
- in plus, si daca le aranjam in ordine descrescatoare, tot un numar prim obtinem  

 

in imagine aveti lista numerelor prime de la 1  la 1000


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