Using more than two factors in the modulus of the RSA cryptosystem has the arithmetic advantage that the private key computation can be speeded up by CRT. With this idea, we present an efficient combination of two variants of RSA cryptosystem (Batch and Mprime RSA) which makes the decryption process faster than the existing variants. It can not only speed up RSA decryption but also guarantee the security of RSA cryptosystem. Keyword: RSA Cryptosystem Mprime RSA Batch RSA QC-RSA CRT