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A133149 Greatest product of two primes made up together of digits 0 to n once. 0
206, 9223, 211763, 3229763, 46218553, 651191243, 8437304723 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
EXAMPLE
We have
a(3) = 103*2 = 206.
a(4) = 401*23 = 9223.
a(5) = 503*421 = 211763.(and not 523*401 which is smaller)
a(6) = 6421*503 = 3229763.(and not 5021*643 which is smaller)
a(7) = 7451*6203 = 46218553.(and not 7043*6521 which is smaller)
a(8) = 85201*7643 = 651191243.(and not 76423*8501 which is smaller)
a(9) = 96401*87523 = 8437304723.(and not 96703*84521 which is smaller)
CROSSREFS
Cf. A125722.
Sequence in context: A054007 A285754 A201032 * A080530 A192825 A045069
KEYWORD
fini,full,nonn,base
AUTHOR
Lekraj Beedassy, Dec 16 2007
STATUS
approved

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Last modified June 14 08:28 EDT 2024. Contains 373393 sequences. (Running on oeis4.)