Abundant Numbers
283
Abundant Numbers (Long)
339
Arabic to Roman
444
Arithmetic Numbers
366
Catalan Numbers
423
Collatz
678
Day of Week
797
Divisors
441
Fibonacci
634
Fizz Buzz
461
Foo Fizz Buzz Bar
470
Fractions
530
ISBN
252
564
Jacobi Symbol
462
Leap Years
588
Leyland Numbers
333
ln 2
512
Niven Numbers
541
Pernicious Numbers
460
Pernicious Numbers (Long)
525
Prime Numbers
436
Prime Numbers (Long)
465
π
173
𝑒
690