The term number representation system is identified in base64 scheme by the sequence bnVtYmVyIHJlcHJlc2VudGF0aW9uIHN5c3RlbQ==, while the MD5 signature is equal to 9617a46019a42d69cc312d683c724391. The ASCII encoding of number representation system in hexadecimal notation is 6e756d62657220726570726573656e746174696f6e2073797374656d.