22 lines
302 B
Ruby
22 lines
302 B
Ruby
def is_prime(prime)
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sqrt = Math.sqrt(prime)
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i=3
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while(i <= sqrt)
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if (prime % i == 0)
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return false
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end
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i+= 2
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end
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return true
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end
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number = 3
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sum = 5
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until(number >= 2000000)
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number += 2
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if(is_prime(number))
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sum += number
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end
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end
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puts sum;
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