A 5-qubit code corrects against single qubit errors. You could say a factor of 5 is a lower bound. In more technical terms, this scheme fixes all weight-1 error

A 5-qubit code corrects against single qubit errors. You could say a factor of 5 is a lower bound. In more technical terms, this scheme fixes all weight-1 errors. More realistically [1], you'd have a factor of around 1,600 for a distance-27 code. [1] https://arxiv.org/pdf/1905.09749.pdf https://arxiv.org/pdf/1905.09749.pdf