Question: In the RSA cryptosystem, it is possible that M = C, that is, the plaintext and the ciphertext may be identical. Is this a security

In the RSA cryptosystem, it is possible that M = C, that is, the plaintext and the ciphertext may be identical.

Is this a security concern in practice?

For modulus N = 3127 and encryption exponent e = 17, find at least one non trivial message M (i.e. M > 1) that encrypts to itself

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