Pan Digital Number is the smallest with all the digits 1 to 9 with no repeats.
When looking forwards or backwards, eleven Primes can be extracted from that number preserving the same sequence.
Among the eleven primes, one of each 4 digit, 5 digit, 8 digit ones exist. Rest are single and double digit primes.
Just using deductive reasoning and no brute force, deduce all the primes.