61

This number is a prime.

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

+ The smallest prime of the form S(n)² + P(n)², where S(n) and P(n) denote the sum and product, respectively, of the first n primes (here n = 2). The only other known prime of this form is 44389 (n = 4). Are there any more? [Ahmed]

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