The final national crowd estimate is that somewhere between 3.6 million and 4.5 million people marched across the country in Women’s March On Washington.

According to UConn Professor Jeremy Pressman’s Google document of crowd estimates the low-end estimate is 3.66 million marchers. The high-end estimate is 4.57 million. Whether it is the low or high estimate that is accurate the Women’s March On Washington shattered the previous record for the largest one-day protest in the United States.

Consider that the 1963 Civil Rights March On Washington had 250,000 attendees and that the previous record holder was believed to one of either the anti-nuclear protest in Central Park in 1982, the Million Man March in 1995, or the LGBT March for Equal Rights in 1993. Each of these protests had a high-end estimate of 1 million or so.

The Women’s March low-end estimate is more than three and a half times bigger than anything that has ever been done before in the United States of America.