Passage: It took Lone Star a little over a year and a half to reach 31,441 feet (9,583 m), a depth of almost six miles. During drilling, the well encountered enormous pressure – almost 25,000 psi (172,369 kPa). No commercial hydrocarbons were found before drilling hit a molten sulfur deposit, which melted the drill bit. The well was plugged back and completed in the Granite Wash from 11,000 to 13,200 feet as a natural gas producer.According to publicly available well records from the Oklahoma Corporation Commission, the Bertha Rogers hole ceased production of natural gas in July 1997 and has since been plugged and abandoned.

Question: What was the pressure the Lone Star experienced while drilling?
25,000 psi