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A063167 Composite numbers which in base 8 contain their largest proper factor as a substring. 1
893, 1961, 7087, 14219, 30607, 35417, 47053, 53953, 55421, 61513, 80089, 90509, 127067, 157967, 162521, 186059, 233273, 340987, 344051, 378589, 442583, 458441, 469213, 607567, 617503, 668923, 671599, 739561, 767341, 868591, 923633, 927463 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Do[ If[ !PrimeQ[ n ] && StringPosition[ ToString[ FromDigits[ IntegerDigits[ n, 8 ] ] ], ToString[ FromDigits[ IntegerDigits[ Divisors[ n ] [ [ -2 ] ], 8 ] ] ] ] != {}, Print[ n ] ], {n, 2, 10^6} ]
CROSSREFS
Cf. A062238.
Sequence in context: A272932 A309871 A063878 * A210007 A251315 A218814
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Aug 08 2001
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)