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A069868
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Smallest n-th power whose digit reversal is a prime.
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0
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2, 16, 125, 16, 32, 16777216, 128, 16777216, 35184372088832, 1024, 34271896307633, 16777216, 1490116119384765625, 182059119829942534144, 35184372088832, 3876269050118516845397872321, 131072, 14551915228366851806640625, 1134787999706880954999833295916475119, 3584859224085422343574104404449462890625
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OFFSET
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1,1
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LINKS
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PROG
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(Python)
from sympy import isprime
def a(n):
k = 1
while not isprime(int(str(k**n)[::-1])): k += 1
return k**n
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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