My Question Through The Attack We Can Decrypt The Key ?

There Is The Option Of Public And Private Key In RSA ?

If There Public Key And Private Key Options Are There How To Identify Is The Pubilc Key Or Private Key ?

I hope below cryptography mathematics will answer yours above questions and the rest I simply dont know :P and for the decrypting the key you need super computer and continues computation of 2 year minimum ....and as per the security policy most of the company changed the key after every month ...so even if you able to crack it , it might bee possible it was changed way back  

The RSA algorithm requires a user to generate a key-pair, made up of a public key and a private key, using this asymmetry. Descriptions of RSA often say that the private key is a pair of large prime numbers (p, q), while the public key is their product n = p × q.

This is almost right; in reality there are also two numbers called d and e involved; e, which is used for encryption, is usually 65537, while d, which is used for decryption, is calculated from e, p, and q. The way we calculate d is straightforward to do but complicated to explain, and isn't really necessary for our purposes here. (Below, I'll give you some source code and a web app to automate the process so that you don't have to worry about it while solving the puzzle.) The end result is that d can be used to decrypt what e and n encrypt (using an operation called modular exponentiation), but only the private key's owner knows or can calculate d.

n is, indeed, published as part of the public key. Not only is the public allowed to know this number, but for security reasons the public key holder normally wants everyone to know it, to prevent someone else from maliciously impersonating them by giving out some other value of n

if need more try http://math.tut.fi/~ruohonen/MC.pdf

Cheers mate