89999...32213 (47-digits)

This number is a prime.

8999999 9998888888 8777777766 6666555554 4443332213

Single Curio View: (Seek other curios for this number)

The larger of only two primes formed by inserting between the digits of a double-digit prime, i.e., 83, the concatenation in reverse order of all the rep-digit numbers made up by using d times each digit d. [Loungrides]

Submitted: 2018-01-25 18:25:52; Last Modified: 2018-12-23 14:15:05.