The term factor of proportionality is identified in base64 scheme by the sequence ZmFjdG9yIG9mIHByb3BvcnRpb25hbGl0eQ==, while the MD5 signature is equal to f0e26b05f4277703a8259f744ebbc266. The ASCII encoding of factor of proportionality in hexadecimal notation is 666163746f72206f662070726f706f7274696f6e616c697479.