# Math

posted by
**Zeneth**
.

Find the smallest prime number N such that the following is true:

The largest prime factor of N−1 is A;

The largest prime factor of A−1 is B;

The largest prime factor of B−1 is 7.

posted by
**Zeneth**
.

Find the smallest prime number N such that the following is true:

The largest prime factor of N−1 is A;

The largest prime factor of A−1 is B;

The largest prime factor of B−1 is 7.