This number is a prime.

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The smallest prime that can be represented as the sum of first n composite numbers, (n=14), each formed from a prime or composite number by repeating it twice, i.e., 22+33+44+55+66+77+88+99+1010+1111+1212+1313+1414+1515. [Loungrides]

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