Project Euler #51: Prime digit replacements

Hacker
Rank
Score
681
flag of Hong Kong
100.00
682
flag of India
100.00
683
flag of India
100.00
684
flag of India
100.00
691
flag of India
100.00
693
flag of Pakistan
100.00
694
flag of India
100.00
696
flag of India
100.00
698
flag of India
100.00
699
flag of India
100.00
700
flag of India
100.00
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