What is prime block?

Could you please elaborate on the concept of "prime block" in the context of cryptocurrency and finance? I'm interested in understanding its significance, how it functions, and what role it plays in the overall blockchain ecosystem. Could you also explain how prime blocks differ from regular blocks, and what potential benefits or drawbacks they might have? Additionally, could you provide some examples or scenarios where prime blocks might be utilized, and how they might impact the security and scalability of blockchain networks? Thank you for your assistance in clarifying this topic.