$ ldd ./factor ./factor: Start End Type Open Ref GrpRef Name 0000000000400000 0000000000860000 exe 1 0 0 ./factor 0000000200692000 0000000200ba2000 rlib 0 1 0 /usr/lib/libstdc++.so.52.0 0000000202c29000 0000000203051000 rlib 0 2 0 /usr/lib/libm.so.7.0 000000020d482000 000000020d8a6000 rlib 0 1 0 /usr/lib/libpthread.so.13.1 0000000209b57000 000000020a038000 rlib 0 1 0 /usr/lib/libc.so.60.1 0000000202800000 0000000202800000 rtld 0 1 0 /usr/libexec/ld.so $ ./factor