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Search: id:A115078
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| A115078 |
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Numbers n such that n=prime(1+d_1)*prime(1+d_2)*...*prime(1+d_k), where d_1 d_2 ... d_k is the decimal expansion of n. |
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1
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| 171, 290, 2145, 3381, 74613, 10664845620, 14771330561681694, 2744819721528289762500
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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a(9), if exists, must have more than 32 digits.
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EXAMPLE
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a(2)=290 because 290=p(1+2)*p(1+9)*p(1+0)=5*29*2
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MATHEMATICA
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t={}; Do[If[n==Times@@Prime[1+IntegerDigits@n], Print[n]; AppendTo[t, n]], {n, 10^5}]; t
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CROSSREFS
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Cf. A097227.
Adjacent sequences: A115075 A115076 A115077 this_sequence A115079 A115080 A115081
Sequence in context: A136365 A031900 A120819 this_sequence A062907 A116459 A016057
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KEYWORD
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base,nonn
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AUTHOR
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Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 12 2006
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