What does this Zig snippet output?

1const std = @import("std");
2fn power(base: u64, exp: u64) u64 {
3    if (exp == 0) return 1;
4    return base * power(base, exp - 1);
5}
6pub fn main() void {
7    std.debug.print("{d}\n", .{power(2, 10)});
8}