Hortaros
Abundant Numbers
507
Abundant Numbers (Long)
558
Arabic to Roman
343
Collatz
697
Divisors
818
Fibonacci
934
Fizz Buzz
876
Foo Fizz Buzz Bar
774
Fractions
572
Niven Numbers
707
Number Spiral
341
Pernicious Numbers
674
Prime Numbers (Long)
515
Quine
946
Roman to Arabic
463
√2
694