Abundant Numbers
3rd
51st
Abundant Numbers (Long)
3rd
28th
Arithmetic Numbers
23rd
ASCII Table
2nd
151st
Card Number Validation
76th
Catalan Numbers
14th8th
8th
20th
1st
23rd
Collatz
7th
3rd
133rd
Day of Week
4th
1st
1st
7th14th
1st
21st
Divisors
49th19th
1st
38th41st25th
1st
1st
Evil Numbers (Long)
3rd
20th33rd
173rd
Factorial Factorisation
24th
Farey Sequence
124th
Fibonacci
13th37th8th1st1st25th21st1st12th1st
34th28th40th
1st70th1st20th61st61st
57th
Fractions
3rd
2nd
13th
1st
1st
Happy Numbers
131st
Happy Numbers (Long)
30th
Inventory Sequence
60th
ISBN
6th
Leap Years
10th
17th
51st
Look and Say
3rd
3rd4th
16th
1st30th59th
9th
Medal Tally
5th
99th
Niven Numbers (Long)
3rd
26th
37th
Number Spiral
161st
Odious Numbers
1st
148th
Odious Numbers (Long)
3rd
1st31st
104th
Ordinal Numbers
2nd
247th
22nd
Pangram Grep
9th
10th
53rd
Pascal’s Triangle
37th
1st
Pernicious Numbers
1st
179th
Pernicious Numbers (Long)
1st
67th
Prime Numbers
1st1st
447th
Prime Numbers (Long)
1st1st
189th
Recamán
141st
ROT13
47th
Scrambled Sort
4th
9th
6th
Smith Numbers
88th
Time Distance
181st
Transpose Sentence
107th
Van Eck Sequence
118th
√2
93rd
𝑒
9th7th
5th
5th11th
106th
21st