Evaluate
2\sqrt{64664839}\approx 16082.890163152
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2\sqrt{64664839}
Factor 258659356=2^{2}\times 64664839. Rewrite the square root of the product \sqrt{2^{2}\times 64664839} as the product of square roots \sqrt{2^{2}}\sqrt{64664839}. Take the square root of 2^{2}.
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