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| | Prime Curios!: 191 |
 | | 191 is the smallest prime such that the sum of the reciprocals of the primes less than or equal to it begins with the digits of the next prime. |
 | | When the palindromic prime 191 is doubled and one is added to this result, the resulting number is yet another palindromic prime. |
 | | The smallest prime of the smallest set of four consecutive multidigit primes, i.e., {191, 193, 197, 199}, whose sum of digits (i.e., 11, 13, 17, 19) is another set of four distinct primes. |
| primes.utm.edu /curios/page.php?short=191 (400 words) |
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