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A123913 Semiprimes with prime factors summing up to 100. 0
291, 979, 1411, 2059, 2419, 2491 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..5.

EXAMPLE

291 = 3*97 - 3 and 97 are both primes summing up to 100.

MATHEMATICA

Table[Select[Range[50], PrimeQ[ # ] && PrimeQ[100 - # ] &] [[k]]*(100 - Select[Range[50], PrimeQ[ # ] && PrimeQ[100 - # ] &] [[k]]), {k, 6}]

CROSSREFS

Sequence in context: A098250 A031515 A090890 * A031695 A158254 A088892

Adjacent sequences:  A123910 A123911 A123912 * A123914 A123915 A123916

KEYWORD

base,fini,full,nonn

AUTHOR

Tanya Khovanova, Oct 28 2006

STATUS

approved

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Last modified May 23 19:46 EDT 2017. Contains 286926 sequences.