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Search: id:A088114
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| A088114 |
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Smallest palindrome which can be expressed as the product of n palindromes > 1 (not necessarily distinct). |
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+0
1
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| 2, 4, 8, 88, 252, 2112, 2112, 2112, 4224, 8448, 48384, 48384, 405504, 405504, 405504, 40955904, 677707776, 677707776, 677707776, 677707776, 677574475776, 677574475776, 42833977933824, 6929958668599296
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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No more terms < 10^14. - David Wasserman (wasserma(AT)spawar.navy.mil), Jul 21 2005
The sequence is infinite. One can always multiply an n-digit palindrome by 10^n+1 to get another term. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 06 2006
a(25) > 10^18.
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EXAMPLE
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a(6) = a(7) =a(8) = 2112
2112 = 2*2*2*2*4*33
2112 = 2*2*2*2*2*2*33
2112 = 2*2*2*2*2*2*3*11
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CROSSREFS
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Cf. A071277. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 11 2008]
Sequence in context: A087375 A018580 A089337 this_sequence A076886 A046385 A068664
Adjacent sequences: A088111 A088112 A088113 this_sequence A088115 A088116 A088117
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KEYWORD
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base,more,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 25 2003
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jul 21 2005
Definition edited and a(24) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Sep 22 2009
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