7523
This number is a prime.
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The smallest Honaker
prime with all the prime digits: 7523 is the 953rd
prime and 7 + 5 + 2 + 3 = 9 + 5 + 3. Note that the latter
sum 17 and the concatenation 7523953 are also primes, as
are the reversals 3257, 359, 71. [Beedassy]
Submitted: 2009-06-06 20:57:31; Last Modified: 2014-07-21 03:48:28.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell