12 Days of Christmas
800
Abundant Numbers
363
765571583638404
Collatz
542
883
Divisors
504
679
Emirp Numbers
447
Evil Numbers
816
Fibonacci
750676803611
947
Fizz Buzz
630
Foo Fizz Buzz Bar
466
Happy Numbers
443
Happy Numbers (Long)
511
Jacobi Symbol
299
Leap Years
597
Niven Numbers
595
Niven Numbers (Long)
504
573
658
Prime Numbers
441
506
Tongue-twisters
501