These numbers are very volatile and the evidences tend to increase with discoveries of new chemical combinations, new extra-solar planets and new forms of life that survive in the most inhospitable environments right here, in our planet.
Meanwhile, the people of the SITI Project continues promoting a great effort to read meticulously each signal obtained from radio telescopes in the hope of finding evidence of some other intelligent civilization.
Precisely, the guys of SITI Project look for extra-terrestrial intelligent civilizations who know and control the tele-communications and, particularly, are trying to make contact with other civilizations.
The Interstellar Rosetta Stone, which they want to find, bases on the Prime Number Sequence, a sequence supposedly impossible to be generated by processes don't produced by intelligent beings. The reception of a signal as a result of the first 12 Prime Numbers (1, 2, 3, 5, 7, 11, 13, 1 7, 19, 23, 29, 31), for example, must sound like an interstellar "Hi!".
This idea is very interesting and has wide acceptance inside and outside the scientific and academic societies. However a question arises: the Primes Numbers Sequence is really an odd sequence? Does it really serve as an identification of intelligence?
Since the year 2002, a team of Indian mathematicians got an efficient way to determine whether a number is prime or not. This discovery has made and will have many impacts, especially on Computer System Security.
So, analyzing the essence of Prime Numbers Sequence, someone can see that it is possible to generate other mathematic sequences so exotic as Prime Numbers Sequence is.
Currently I have studied the following sequence: 6, 8, 10, 14, 15, 21, 22, 26, 27, 33, 34, 35, 38 ... This sequence, as well as the Prime Numbers Sequence, and until the contrary be proved, doesn't have none corresponding equation. In other way, it also can be used as an identifier of extra-terrestrial living beings. (I pretend to detail it here in this space, together with the Prime Numbers Sequence).
Thus, as the mathematical problems are solved, new possibilities arise in the horizon.
Perhaps, shortly, we can note that interstellar space is full of dozens, if not hundreds, of extraterrestrial radios sending signals into space continously, speaking greetings to Earth-people, such as "Hi!", "Hello!", "How are you?", "Who are you? " in languages based on mathematical sequences that we don't know yet.
Perhaps, shortly, we can note that we are who failing in our conjectures, and we'll have to sign the certificate of our own primitiveness.