Question 584523

(1 !) + (2 !) + (3 !) + (4 !) + (5 !) + (6 !) + (7 !) + (8 !) + (9 !) + (10 !) = 4 037 913

everything after 10! will have a 0 in the 1 and 10s digit place, so it will continue to be 1