Viggo Brun, using the sie
Viggo Brun, using the sieve method, showed that the number of them less than a given number, x, is much less than x divided by the square of the log of x. The Hardy-Littlewood conjecture (*) is a generalization of the guess regarding these numbers, and it concerns their distribution. FTP, identify these pairs of unfactorable numbers that represent, with the exception of 2 and 3, the smallest possible distance between them.
Viggo Brun, using the sieve method, showed that the number of them less than a given number, x, is much less than x divided by the square of the log of x.
{Twin Prime}s