90090...90991 (1920-digits)
This number is a prime.
Just showing those entries submitted by 'Chandler': (Click here to show all)
Phi(3927,10) is the smallest (and only known proven) pandigital unique prime. [Chandler]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell