I mined my npub: npub1000000002etf7tnxxs2hc5r5tcvjvm7q84fdjkvkjxfchsqnf0rspk7fg9

It took about a week running locally on my 16 core CPU.

Here's a rust based generator. https://github.com/chawyehsu/nostr-vanity-address-generator

Here's a web based version

https://www.nostr.rest/