On June 24, 2025, researchers from Shanghai University reportedly factored a 22-bit RSA key using a quantum annealing system, marking a new milestone in quantum computing.
While the key size was not large enough to threaten modern encryption, the experiment adds momentum to the global conversation around quantum threats to digital security — including cryptocurrency wallets.
What Was Actually Broken?
The team used a D-Wave quantum annealer to solve a simplified version of the integer factorization problem, successfully factoring a 22-bit RSA key. In cryptographic terms, this size is considered negligible — far below what’s used in real-world applications.
A 22-bit RSA key is smaller than what’s used in real applications by a factor of 10^60 — roughly equivalent to guessing a four-digit PIN versus a 600-digit one.
RSA encryption in practical use typically involves keys that are 2048 bits or longer.
Additionally, most blockchain systems — including Bitcoin and Et
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