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Results tagged with primes
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user 6143
Primes or prime numbers are numbers which are divisible only by themselves and one, starting with 2, 3, 5, 7, 11.... They are commonly used in encryption and hashing algorithms.
8
votes
Sum of all primes under 2 million
yield(n);
}
}
int main() {
uintmax_t sum = 0;
primesupto(2000000, [&sum] (int prime) { sum += prime; });
std::cout << sum << std::endl;
}
Demo
$ g++ -std=c++0x sum-primes.cc -o sum-primes … /sum-primes
142913828922 …
- 733