Is this one of those problems that looks trivially easy to solve but has actually been an open problem in math for centuries and drives all who attempt it to inevitable madness?
Have you tried
36875131794129999827197811565225474825492979968971970996283137471637224634055579,
154476802108746166441951315019919837485664325669565431700026634898253202035277999,
4373612677928697257861252602371390152816537558161613618621437993378423467772036
?