Project Euler #216: Investigating the primality of numbers of the form 2n² - 1

Hacker
Rank
Score
21
flag of China
09.26
22
flag of Ukraine
07.41
23
flag of United States
05.56

[deleted]

24
flag of null
05.56
27
flag of Canada
05.56
29
flag of Greece
05.56
30
flag of Romania
05.56
31
flag of Canada
05.56
33
flag of Belgium
05.56
35
flag of India
05.56
36
flag of Ireland
05.56
38
flag of United States
05.56
40
flag of Canada
05.56
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