It’s completely irrelevant to that problem. Breaking crypto requires quantum error correction, which we think requires thousands (perhaps hundreds of thousands) of physical qubits per logical qubit. And the operations of the computation require many more logical qubits than just representing the target value.

It’s still gonna be awhile. But this is still pretty interesting because a lot of the detractors of quantum computing thought there was strong evidence that we’d never even manage to get this far. So it seems _slightly_ more likely that large scale abstract quantum computation is feasible.

Many years away. A good guestimate is that you need 1M physical qubits factor numbers fast.

Also, there is classical public-key cryptography (i.e. encryption algorithms that run efficiently on today's classical computers) that is not susceptible to quantum computers. And symmetric cryptography has never been susceptible to quantum computers.

Gidney and Ekerå have you covered: https://arxiv.org/abs/1905.09749

Short answer, this probably won't even register as a pitstop on the technical pathway.

There are probably entities saving encrypted data right now for when that day arrives. Brings up many interesting lines of thought beyond "is it breakable right now?"