Abundant Numbers
10th
148th
Abundant Numbers (Long)
6th
95th
Arithmetic Numbers
71st
ASCII Table
4th
176th
Card Number Validation
95th
Catalan Numbers
14th8th
8th
21st
1st
25th
Collatz
8th
195th
Day of Week
4th
8th
1st
11th14th
76th
26th
Divisors
52nd19th
1st
39th42nd25th
1st
118th
Evil Numbers (Long)
4th
21st35th
179th
Factorial Factorisation
49th
Farey Sequence
138th
Fibonacci
13th39th51st1st1st25th23rd1st14th22nd
35th28th42nd
1st72nd1st21st63rd68th
59th
Fractions
3rd
6th
14th
60th
1st
Happy Numbers
190th
Happy Numbers (Long)
81st
Inventory Sequence
84th
ISBN
6th
Leap Years
12th
19th
56th
Look and Say
4th
8th4th
17th
1st32nd105th
16th
Medal Tally
5th
111th
Niven Numbers (Long)
3rd
27th
61st
Number Spiral
176th
Odious Numbers
1st
156th
Odious Numbers (Long)
5th
1st33rd
111th
Ordinal Numbers
6th
272nd
23rd
Pangram Grep
10th
119th
Pascal’s Triangle
39th
45th
Pernicious Numbers
1st
192nd
Pernicious Numbers (Long)
3rd
90th
Prime Numbers
1st1st
485th
Prime Numbers (Long)
1st1st
230th
Recamán
178th
ROT13
83rd
Scrambled Sort
4th
9th
38th
Smith Numbers
109th
Time Distance
193rd
Transpose Sentence
130th
Van Eck Sequence
148th
√2
118th
𝑒
9th7th
5th
5th14th
139th
22nd