Abundant Numbers
284
Abundant Numbers (Long)
340
Arabic to Roman
445
Arithmetic Numbers
368
Catalan Numbers
424
Collatz
680
Day of Week
800
Divisors
442
Fibonacci
634
Fizz Buzz
461
Foo Fizz Buzz Bar
471
Fractions
463
ISBN
254566
Jacobi Symbol
464
Leap Years
589
Leyland Numbers
333
ln 2
514
Niven Numbers
541
Pernicious Numbers
460
Pernicious Numbers (Long)
527
Prime Numbers
436
Prime Numbers (Long)
466
π
174
𝑒
691