D-Wave Quantum said Wednesday that it had not only achieved “quantum supremacy,” but had done so using a practical problem, marking an industry first. The quantum-computing company said its Advantage2 system solved a problem in 20 minutes that would take one of the world’s most powerful supercomputers nearly 1 million years to complete.

D-Wave Quantum (QBTS) has rallied more than 25% over the past five trading days after the company said it achieved a coveted industry landmark of “quantum supremacy.” What it essentially means is that the company’s quantum computer can now solve certain problems that can’t be deciphered with a conventional computer.