What are the largest and smallest 5-digit numbers that satisfy the following conditions?

• Each digit of the number is a prime number.
• Each successive pair of digits forms a 2-digit number that is NOT a prime number.
• Each of the prime digits must appear at least once in the 5-digit number.

Note: I don't care either it is calculation problem or programming. I just know it uses knowledge of basic mathematics.

Parbatya is correct as usual.

The clue for solution is:
1. 3 should be the first digit otherwise we will get 2 digit numbers as prime (23, 53, 73)
2. With 3 in the beginning, 7 can not be 2nd digit as 37 is prime.


Rest you can add...

KHAI KE KHAI KE PYAAT MA TA!!!!