88

This number is a composite.

88 + 91ⁿ is prime for n = 1 to 6. [Blanchette]

Palindromic strobogrammatic sum of the first Cunningham chain of the first kind (2, 5, 11, 23, 47). [Rock]

The following quotation about primes contains 88 letters: "The obvious mathematical breakthrough would be development of an easy way to factor large prime numbers." -- Bill Gates (1955- ). [Post]

There are 88 distinct-odd-digit primes. [Loungrides]

There are 88 prime numbers that have only odd digits and have no duplicate digits. [Gaydos]

The sum of the first 88 emirps is 88 thousand. [Gaydos]

The third Honaker number equals the sum of the first two Honaker numbers (32 + 56). [Gaydos]

The smallest positive integer that has twice the sum of digits as its prime factorization (2*2*2*11). [Gaydos]