Abundant Numbers
529
573
Abundant Numbers (Long)
519
590
Arithmetic Numbers
640
Catalan Numbers
253
Collatz
425
556
644
673
Day of Week
639
Divisors
448
763
606
Emirp Numbers
422
Evil Numbers
466
Evil Numbers (Long)
474
Fibonacci
346
556
Fizz Buzz
894
Happy Numbers
403
Happy Numbers (Long)
465
Leap Years
394
570
ln 2
515
Niven Numbers
327
364
Niven Numbers (Long)
414
539
407
Odious Numbers
469
Odious Numbers (Long)
469
Pernicious Numbers
280
Pernicious Numbers (Long)
359
Prime Numbers
338
461
569
494
Prime Numbers (Long)
353
571
530
Quine
471
RecamΓ‘n
604
Ο
152
Ο
166
Ο
515
β2
521