Steve Weis from Anthropic successfully factored RSA-896 (896-bit), a cryptographic challenge that once carried a $75,000 prize. He ported the CADO-NFS factorization algorithm to run on 2,048 GPUs over 10 days—a computational feat costing approximately $3.3 million at current Blackwell GPU rates. This represents a significant advance in cryptographic integer factorization capability, though the practical security impact depends on RSA key lengths still in deployment.