127535319031633

This number is a composite.

                                                            12753 5319031633

The semiprime 127535319031633 has remarkable propertes that it is a semiprime S = A*B such that A.B, B.A, S.A.B, S.B.A, A.S.B, A.B.S, B.S.A, and B.A.S are all prime numbers. Here, all dots here mean concatenation. It also has 3 additional properties that: Rev(S), S + A + B and the average of its prime factors (i.e., 1/2(A+B)) are all also primes. 127535319031633 is the smallest semiprime with such properties. [Tolgede]