Abundant Numbers
5th
63rd
Abundant Numbers (Long)
4th
35th
Arithmetic Numbers
24th
ASCII Table
3rd
169th
Card Number Validation
90th
Catalan Numbers
14th8th
10th
21st
1st
26th
Collatz
7th
3rd
155th
Day of Week
4th
1st
1st
9th14th
1st
26th
Divisors
54th19th
1st
41st45th29th
1st
1st
Evil Numbers (Long)
3rd
24th39th
186th
Factorial Factorisation
30th
Farey Sequence
142nd
Fibonacci
13th40th14th1st1st26th25th1st15th1st
36th31st45th
1st75th1st23rd65th71st
64th
Fractions
3rd
3rd
16th
1st
1st
Happy Numbers
153rd
Happy Numbers (Long)
38th
Inventory Sequence
78th
ISBN
6th
Leap Years
10th
20th
62nd
Look and Say
4th
5th5th
17th
1st32nd74th
10th
Medal Tally
5th
113th
Niven Numbers (Long)
4th
34th
52nd
Number Spiral
181st
Odious Numbers
1st
165th
Odious Numbers (Long)
3rd
1st40th
117th
Ordinal Numbers
3rd
264th
24th
Pangram Grep
9th
13th
65th
Pascal’s Triangle
40th
1st
Pernicious Numbers
1st
201st
Pernicious Numbers (Long)
1st
86th
Prime Numbers
1st1st
475th
Prime Numbers (Long)
1st1st
209th
Recamán
161st
ROT13
68th
Scrambled Sort
4th
9th
11th
Smith Numbers
102nd
Time Distance
199th
Transpose Sentence
128th
Van Eck Sequence
135th
√2
114th
𝑒
9th7th
5th
5th16th
130th
23rd