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A108610
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Semiprimes with prime sum of decimal digits and prime sum of prime factors.
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0
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34, 58, 142, 214, 274, 298, 382, 454, 478, 562, 694, 838, 922, 1042, 1138, 1198, 1282, 1318, 1642, 1714, 2038, 2098, 2122, 2182, 2302, 2458, 2638, 2854, 2902, 2962, 3334, 3394, 3442, 3574, 3754, 3862, 4054, 4162, 4258, 4474, 4618, 4762, 5314, 5374, 5422
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Intersection of A108605 and A108606. All terms are even. Cf. A001358 semiprimes, A101605 3-almost primes, A108605 semiprimes with prime sum of factors, A108606 semiprimes with prime sum of digits.
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EXAMPLE
| 34=2*17 (semiprime), with 3+4=7 and 2+17=19 both prime.
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CROSSREFS
| Cf. A001358, A101605, A108605, A108606.
Sequence in context: A176687 A103558 A103686 * A119454 A115159 A125192
Adjacent sequences: A108607 A108608 A108609 * A108611 A108612 A108613
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KEYWORD
| nonn,base
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), Jun 12 2005
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