A061665 Numbers n whose digits in their prime factorization are the same as those of the prime factorization of n+1.

8763, 61077, 62157, 160209, 218553, 259814, 292226, 317289, 388118, 392702, 423165, 424878, 425757, 676131, 676317, 719942, 749948, 775018, 797905, 822990, 848262, 854398, 859537, 875172, 891158, 949332, 953970, 983018, 1084773

Offset

0,1

Links

Table of n, a(n) for n=0..28.

Example

8763 = 3*23*127 and 8764 = 2*2*7*313.

Mathematica

fds[n_]:=Sort[Flatten[IntegerDigits/@Table[First[#], {Last[#]}]&/@n]]; Select[Range[1100000], fds[FactorInteger[#]]==fds[FactorInteger[#+1]]&] (* Harvey P. Dale, Jun 21 2011 *)

Crossrefs

Sequence in context: A269288 A234148 A205254 * A237484 A255758 A255751

Adjacent sequences: A061662 A061663 A061664 * A061666 A061667 A061668

Keyword

base,nonn

Author

Erich Friedman, Jun 16 2001

Extensions

More terms from David Wasserman, Jun 20 2002

Status

approved