Abundant Numbers
9th
133rd
Abundant Numbers (Long)
5th
81st
Arithmetic Numbers
62nd
ASCII Table
4th
154th
Card Number Validation
83rd
Catalan Numbers
13th7th
8th
19th
1st
22nd
Collatz
7th
3rd
172nd
Day of Week
4th
7th
6th14th
62nd
20th
Divisors
46th18th
1st
36th39th23rd
1st
106th
Evil Numbers (Long)
4th
18th30th
161st
Factorial Factorisation
41st
Farey Sequence
123rd
Fibonacci
12th37th47th1st1st23rd19th1st13th19th32nd27th38th
1st66th1st19th59th60th
55th
Fractions
3rd
5th
13th
54th
1st
Happy Numbers
174th
Happy Numbers (Long)
73rd
Inventory Sequence
70th
ISBN
6th
Leap Years
11th
17th
47th
Look and Say
2nd
7th4th16th
π29th95th
14th
Medal Tally
4th
99th
Niven Numbers (Long)
3rd
25th
52nd
Number Spiral
160th
Odious Numbers
1st
137th
Odious Numbers (Long)
5th
1st29th
94th
Ordinal Numbers
5th
259th
21st
Pangram Grep
8th
10th
106th
Pascalβs Triangle
34th
40th
Pernicious Numbers
1st
167th
Pernicious Numbers (Long)
3rd
70th
Prime Numbers
1st1st
451st
Prime Numbers (Long)
1st1st
203rd
RecamΓ‘n
162nd
ROT13
63rd
Scrambled Sort
4th
8th
28th
Smith Numbers
98th
Time Distance
173rd
Transpose Sentence
112th
Van Eck Sequence
123rd
π
9th7th
5th
5th12th
119th
21st