Abundant Numbers
10th
138th
Abundant Numbers (Long)
6th
84th
Arithmetic Numbers
64th
ASCII Table
4th
162nd
Card Number Validation
88th
Catalan Numbers
14th8th
8th
20th
1st
23rd
Collatz
7th
3rd
183rd
Day of Week
4th
7th
1st
7th14th
67th
20th
Divisors
47th19th
1st
37th40th24th
1st
111th
Evil Numbers (Long)
4th
20th33rd
170th
Factorial Factorisation
41st
Farey Sequence
131st
Fibonacci
13th37th47th1st1st24th20th1st13th19th
34th28th40th
1st70th1st20th61st61st
56th
Fractions
3rd
5th
13th
55th
1st
Happy Numbers
179th
Happy Numbers (Long)
75th
Inventory Sequence
74th
ISBN
6th
Leap Years
11th
17th
49th
Look and Say
3rd
7th4th
16th
1st29th95th
15th
Medal Tally
5th
105th
Niven Numbers (Long)
3rd
26th
54th
Number Spiral
167th
Odious Numbers
1st
146th
Odious Numbers (Long)
5th
1st31st
101st
Ordinal Numbers
5th
261st
22nd
Pangram Grep
9th
10th
109th
Pascal’s Triangle
36th
41st
Pernicious Numbers
1st
175th
Pernicious Numbers (Long)
3rd
75th
Prime Numbers
1st1st
463rd
Prime Numbers (Long)
1st1st
213th
Recamán
166th
ROT13
71st
Scrambled Sort
4th
9th
31st
Smith Numbers
103rd
Time Distance
179th
Transpose Sentence
117th
Van Eck Sequence
134th
√2
105th
𝑒
9th7th
5th
5th12th
125th
21st