A Proth number, named after François Proth, is a number that can be expressed as
$$N = k \times 2^n + 1$$
Where \$k\$ is an odd positive integer and \$n\$ is a positive integer such that \$2^n > k\$...
Brain-flak is a stack-based turing-tarpit language, written collaboratively between me, DJMcMayhem, and 1000000000.
Some users are very experienced in the mysterious ways of Brain-Flak. So I thought ...
A completely even number is a positive even integer whose divisors (not including 1) are all even.
Some completely even numbers are:
2 (divisors: 2, 1)
4 (divisors: 4, 2, 1)
16 (divisors: 16, 8, 4, 2,...