15413
This number is a prime.
The smallest prime formed from the concatenation of
integral edges of an Heronian triangle (4-13-15). [Loungrides]
The smallest nontrivial (multidigit) prime that is sum of the reversal of first 19 terms of the Fibonacci sequence:
(0+1+1+2+3+5+8+31+12+...+4852). [Bajpai]
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