 However, according to Robert D. Silverman, John Selfridge agreed that the New Mersenne conjecture is "obviously true" as it was chosen to fit the known data and counter-examples beyond those cases are exceedingly unlikely.It may be regarded more as a curious observation than as an open question in need of proving.Renaud Lifchitz has shown that the "NMC" is true for all integers less than or equal to 30,402,456 by systematically testing all primes for which it is already known that one of the conditions holds.