Abundant Numbers
5th
60th
Abundant Numbers (Long)
4th
34th
Arithmetic Numbers
24th
ASCII Table
3rd
165th
Card Number Validation
88th
Catalan Numbers
14th8th
9th
21st
1st
25th
Collatz
7th
151st
Day of Week
4th
1st
1st
9th14th
1st
26th
Divisors
53rd19th
1st
41st44th26th
1st
1st
Evil Numbers (Long)
3rd
22nd37th
180th
Factorial Factorisation
29th
Farey Sequence
137th
Fibonacci
13th39th14th1st1st26th23rd1st15th1st
36th28th44th
1st74th1st22nd65th67th
62nd
Fractions
3rd
3rd
14th
1st
1st
Happy Numbers
148th
Happy Numbers (Long)
36th
Inventory Sequence
73rd
ISBN
6th
Leap Years
10th
20th
59th
Look and Say
4th
5th4th
17th
1st32nd71st
10th
Medal Tally
5th
110th
Niven Numbers (Long)
3rd
29th
49th
Number Spiral
175th
Odious Numbers
1st
161st
Odious Numbers (Long)
3rd
1st37th
116th
Ordinal Numbers
2nd
262nd
25th
Pangram Grep
9th
63rd
Pascal’s Triangle
39th
1st
Pernicious Numbers
1st
198th
Pernicious Numbers (Long)
1st
83rd
Prime Numbers
1st1st
468th
Prime Numbers (Long)
1st1st
208th
Recamán
157th
ROT13
68th
Scrambled Sort
4th
9th
7th
Smith Numbers
98th
Time Distance
195th
Transpose Sentence
125th
Van Eck Sequence
133rd
√2
111th
𝑒
9th7th
5th
5th13th
127th
22nd