Abundant Numbers
5th
63rd
Abundant Numbers (Long)
4th
35th
Arithmetic Numbers
24th
ASCII Table
3rd
167th
Card Number Validation
89th
Catalan Numbers
14th8th
9th
21st
1st
25th
Collatz
7th
3rd
153rd
Day of Week
4th
1st
1st
9th14th
1st
26th
Divisors
53rd19th
1st
41st46th27th
1st
1st
Evil Numbers (Long)
3rd
24th39th
184th
Factorial Factorisation
29th
Farey Sequence
138th
Fibonacci
13th40th14th1st1st26th24th1st15th1st
36th30th44th
1st75th1st23rd65th70th
64th
Fractions
3rd
3rd
16th
1st
1st
Happy Numbers
151st
Happy Numbers (Long)
37th
Inventory Sequence
76th
ISBN
6th
Leap Years
10th
20th
60th
Look and Say
4th
5th5th
17th
1st32nd72nd
10th
Medal Tally
5th
111th
Niven Numbers (Long)
4th
32nd
52nd
Number Spiral
180th
Odious Numbers
1st
162nd
Odious Numbers (Long)
3rd
1st40th
117th
Ordinal Numbers
3rd
263rd
24th
Pangram Grep
9th
13th
65th
Pascal’s Triangle
40th
1st
Pernicious Numbers
1st
200th
Pernicious Numbers (Long)
1st
85th
Prime Numbers
1st1st
473rd
Prime Numbers (Long)
1st1st
208th
Recamán
158th
ROT13
68th
Scrambled Sort
4th
9th
11th
Smith Numbers
100th
Time Distance
198th
Transpose Sentence
127th
Van Eck Sequence
134th
√2
113th
𝑒
9th7th
5th
5th15th
129th
22nd