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A214024
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Decimal expansion of 4^4^4.
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1
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1, 3, 4, 0, 7, 8, 0, 7, 9, 2, 9, 9, 4, 2, 5, 9, 7, 0, 9, 9, 5, 7, 4, 0, 2, 4, 9, 9, 8, 2, 0, 5, 8, 4, 6, 1, 2, 7, 4, 7, 9, 3, 6, 5, 8, 2, 0, 5, 9, 2, 3, 9, 3, 3, 7, 7, 7, 2, 3, 5, 6, 1, 4, 4, 3, 7, 2, 1, 7, 6, 4, 0, 3, 0, 0, 7, 3, 5, 4, 6, 9, 7, 6, 8, 0, 1, 8, 7, 4, 2, 9, 8, 1, 6, 6, 9, 0, 3, 4, 2, 7, 6, 9, 0, 0
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OFFSET
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155,2
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COMMENTS
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The same as 2^512. In this capacity, a floating point approximation is often casually given in computer programming textbooks (like the Hunt & Thomas) as an example where overflow is risked, and that risk is at times overcome, at others incurred.
3^3^3 = 7625597484987 (see A002488) while 5^5^5 is approximately 1.9110125979457752 * 10^2184.
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REFERENCES
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Andrew Hunt & David Thomas, The Pragmatic Programmer: From Journeyman to Master. New York: Addison-Wesley Longman (2000): 195, the fourth new element added to the object testData in the source code listing.
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LINKS
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EXAMPLE
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4^4^4 = 1.3407807929942597... * 10^154
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MATHEMATICA
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IntegerDigits[4^4^4]
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PROG
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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