Abundant Numbers
3rd
51st
Abundant Numbers (Long)
3rd
28th
Arithmetic Numbers
23rd
ASCII Table
2nd
150th
Card Number Validation
75th
Catalan Numbers
14th8th
8th
20th
1st
23rd
Collatz
7th
3rd
133rd
Day of Week
4th
1st
1st
7th14th
1st
20th
Divisors
47th19th
1st
37th40th24th
1st
1st
Evil Numbers (Long)
3rd
20th33rd
170th
Factorial Factorisation
24th
Farey Sequence
123rd
Fibonacci
13th37th8th1st1st24th20th1st12th1st
34th28th40th
1st70th1st20th61st61st
56th
Fractions
3rd
2nd
13th
1st
1st
Happy Numbers
129th
Happy Numbers (Long)
30th
Inventory Sequence
61st
ISBN
6th
Leap Years
10th
17th
49th
Look and Say
3rd
3rd4th
16th
1st29th55th
9th
Medal Tally
5th
99th
Niven Numbers (Long)
3rd
26th
37th
Number Spiral
159th
Odious Numbers
1st
146th
Odious Numbers (Long)
3rd
1st31st
101st
Ordinal Numbers
2nd
244th
22nd
Pangram Grep
9th
10th
52nd
Pascal’s Triangle
36th
1st
Pernicious Numbers
1st
175th
Pernicious Numbers (Long)
1st
63rd
Prime Numbers
1st1st
440th
Prime Numbers (Long)
1st1st
185th
Recamán
137th
ROT13
47th
Scrambled Sort
4th
9th
6th
Smith Numbers
88th
Time Distance
178th
Transpose Sentence
105th
Van Eck Sequence
114th
√2
89th
𝑒
9th7th
5th
5th10th
102nd
21st