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A107077
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Odd-digit products of three odd-digit primes p*q*r.
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0
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75, 99, 117, 153, 171, 175, 195, 333, 357, 399, 531, 539, 555, 595, 711, 715, 775, 777, 795, 931, 935, 1113, 1179, 1331, 1359, 1519, 1533, 1557, 1573, 1719, 1737, 1773, 1775, 1791, 1975, 3171, 3177, 3179, 3357, 3395, 3515, 3553, 3573, 3577, 3751, 3757, 3759
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Odd-digit primes p,q,r are not necessarily all different, e.g. 75=3*5*5, 99=3*3*11, 1533=3*7*73, etc. Cf. A107076: Odd-digit semiprimes divisors of which are odd-digit primes.
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MATHEMATICA
| With[{odps=Select[Prime[Range[100]], And@@OddQ[IntegerDigits[#]]&]}, Union[Select[Times@@@Tuples[odps, 3], And@@OddQ[IntegerDigits[#]]&]]] (* From Harvey P. Dale, Feb 02 2012 *)
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CROSSREFS
| Cf. A107076.
Sequence in context: A095585 A095571 A095557 * A039485 A045196 A118225
Adjacent sequences: A107074 A107075 A107076 * A107078 A107079 A107080
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KEYWORD
| nonn,base,changed
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), May 10 2005
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EXTENSIONS
| Corrected and extended by Harvey P. Dale, Feb 02 2012
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