Abundant Numbers
574547559513
631
Arrows
478
Collatz
689
626
CSS Colors
83
Emirp Numbers
296
Evil Numbers
784
Fibonacci
932
Fizz Buzz
749
664
890516
Foo Fizz Buzz Bar
729
783
Fractions
621
Happy Numbers
483
Happy Numbers (Long)
607
ISBN
437
Niven Numbers
541
767
Odious Numbers
781
Ordinal Numbers
729
Pangram Grep
687
Pernicious Numbers
360
Prime Numbers
456
Prime Numbers (Long)
342
Quine
439672945
Recamán
417
Smith Numbers
394
Tongue-twisters
408
496
United States
152
√2
671
𝑒
665