My Sexy Irish Cousin

353 is not assigned as an area code in the U.S., but it is the country code for calling Ireland.

According to Wikipedia:

“353 is a palindromic prime, a cousin prime with 349, and a sexy prime with both 347 and 359. It is the first multidigit palindromic prime with all prime digits. Also, it is the smallest number whose 4th power is equal to the sum of four other 4th powers, as discovered by R. Norrie in 1911: 3534 = 304 + 1204 + 2724 + 3154.”

The sum of the digits in 353 is 11, which is louder than 10.

Replies are NOT necessarily posted, but I'll see them.

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