Special properties of number 19 (Today’s Date)

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1. 19 is a prime number.
2. 19 is the maximum number of 4th powers needed to sum to any number
3. 19 is the largest prime number that is palindromic in Roman numerals (XIX).
4. 19 is an Octahedral Number.
5. The Chemical Element Potassium has an atomic number of 19.
6. "The Sun" is numbered with 19 in Tarot cards.

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