ESPN publishes no stat lines for Fran Tarkenton. His career totals, as Wikipedia gives them: 47,003 passing yards, 342 passing touchdowns, 3,686 completions, 6,467 pass attempts, 266 interceptions thrown, 57.0 completion %, 80.4 passer rating, 3,674 rushing yards, 32 rushing touchdowns.
Among the 2,587 NFL players with a career line on file, regular season. A place deeper than 300th is not listed.