Q&A: Why is there so much hype about the quantum computer?

https://phys.org/news/2023-05-qa-hype-quantum.html

“Calculations show that it takes a quantum computer of 10^20M quantum bits
[qubits *] to break an RSA encryption. Right now, the largest quantum
computer is in the region of 430 quantum bits. So there is still some way to
go. So, at the risk of becoming a laughing stock for posterity, I would
guess that it will take another 20 years before we have a quantum computer
that meets these expectations.''

Four orders of magnitude to scale in …

bits computer encryption quantum quantum computer qubits risk rsa rsa encryption stock