Thread:Арсений Иванов/@comment-176.88.97.218-20190802170531/@comment-35134374-20191102185518

The $$^{(x)}$$ means x times prime. Also,
 * XP^2 (4004001), XP^3 (8012006001), XP^XP (2001^2001), XP$$\Omega$$ (2001$$\Omega$$2001) right after /.