The tag 17960498724 means "Saylor's purchase of Bitcoin," and it is often used on social media to refer to every time Michael Saylor or his company MicroStrategy buys a quantity of Bitcoin (BTC).

Michael Saylor is known for his strong support of Bitcoin, and his company MicroStrategy started buying Bitcoin in large quantities as part of its financial strategy since 2020, often announcing each new purchase on its official accounts.

Would you like me to provide you with their latest purchase, or with all purchases since the beginning?