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 A147764 Elias omega coded prime numbers represented in decimal. 2

%I

%S 8,12,84,92,236,244,2628,2636,2652,2676,2684,5524,5540,5548,5564,5588,

%T 5612,5620,11532,11548,11556,11580,11596,11620,11652,11668,11676,

%U 11692,11700,11716,11772,24076,24100,24108,24148,24156,24180,24204,24220

%N Elias omega coded prime numbers represented in decimal.

%C The sequence in binary begins:

%C 2 1000

%C 3 1100

%C 5 1010100

%C 7 1011100

%C The final 0 bit represents an exponent of 1.

%C Because this is a prefix code, there is a one-to-one mapping between the integers and integers representing their factors, provided that the coded factors and exponents are adequately delimited, such as by inserting additional 0 bits.

%C For example, 75600 = 2^4 * 3^3 * 5^2 * 7 is representable as 100^101000 110^110 101010^100 101110^0 -> 1001010000110110010101010001011100 = 9946354780 decimal.

%C This representation is unambiguous because, e.g., the incorrect reading 1001010000110 splits as 100101000 0110 or 100^101000 0^110 -> 2^4 * 1^3, which is clearly wrong.

%K base,easy,nonn

%O 1,1

%A _Reikku Kulon_, Nov 11 2008

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Last modified June 30 18:29 EDT 2022. Contains 354945 sequences. (Running on oeis4.)