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Anonymous
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01/17/2023 7:32 AM
368 B
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Indexable
bool primeCheck(long long n)
{
    if(n<=1) return false;
    if(n<=3) return true;
    if(n%2==0||n%3==0) return false;
    for(int i=5;i<=sqrt(n);i+=6)
    {
        if(n%i==0||n%(i+2)==0)
        {
            return false;
        }
    }
    return true;
}
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