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Sieve Sprint
Cross out the multiples, reveal the primes.
The Sieve of Eratosthenes finds primes by elimination. Cross out every multiple of each highlighted prime — what's left are the primes. Faster and cleaner scores higher.
Cross out the multiples, reveal the primes.
The Sieve of Eratosthenes finds primes by elimination. Cross out every multiple of each highlighted prime — what's left are the primes. Faster and cleaner scores higher.