This article is within the scope of WikiProject Saints, a collaborative effort to improve the coverage of Saints and other individuals commemorated in Christianliturgical calendars on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
It says he recited the entire psalter 20 times in one week, accompanying each psalm with 100 lashes. There are 150 psalms * 20 times = 3000 psalms read. 3000 psalms * 100 lashes = 300,000 lashes. There are 604,800 seconds in a week. If he never slept, and managed a whip strike every two seconds, this is barely possible. Or if it was in 6 days, 518,400. More than a lash per second. Not minute. There are 1,440 minutes a day, 86,400 seconds.