Abundant Numbers
3rd
50th
Abundant Numbers (Long)
3rd
27th
Arithmetic Numbers
23rd
ASCII Table
2nd
143rd
Card Number Validation
70th
Catalan Numbers
13th7th
8th
19th
1st
22nd
Collatz
7th
3rd
122nd
Day of Week
4th
1st
6th14th
1st
20th
Divisors
46th18th
1st
36th39th23rd
1st
1st
Evil Numbers (Long)
3rd
18th30th
161st
Factorial Factorisation
24th
Farey Sequence
115th
Fibonacci
12th37th8th1st1st23rd19th1st12th1st32nd27th38th
1st66th1st19th59th60th
55th
Fractions
3rd
2nd
13th
1st
1st
Happy Numbers
126th
Happy Numbers (Long)
29th
Inventory Sequence
57th
ISBN
6th
Leap Years
10th
17th
47th
Look and Say
2nd
3rd4th16th
π29th55th
9th
Medal Tally
4th
94th
Niven Numbers (Long)
3rd
25th
37th
Number Spiral
151st
Odious Numbers
1st
137th
Odious Numbers (Long)
3rd
1st29th
94th
Ordinal Numbers
2nd
242nd
21st
Pangram Grep
8th
10th
51st
Pascalβs Triangle
34th
1st
Pernicious Numbers
1st
167th
Pernicious Numbers (Long)
1st
59th
Prime Numbers
1st1st
429th
Prime Numbers (Long)
1st1st
177th
RecamΓ‘n
135th
ROT13
41st
Scrambled Sort
4th
8th
5th
Smith Numbers
85th
Time Distance
172nd
Transpose Sentence
101st
Van Eck Sequence
103rd
π
9th7th
5th
5th10th
97th
21st