99899...99899 (25-digits)

This number is a prime.

                                                 99899 9989988388 9989999899

+ The largest "almost plus sign prime" of order 5.

9 9 8 9 9
9 9 8 9 9
8 8 3 8 8
9 9 8 9 9
9 9 8 9 9 
[Loungrides]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell