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

+ The arithmetic average of the first five three-digit palindromic primes. [Silva]

+ The sum of all two-digit emirps witn end-digit seven. [Silva]

+ The smallest palindromic prime that is the sum of the reversals of three consecutive primes: R(71)+R(73)+R(79). [Silva]

+ Sum of the squares of the first seven odd digits of the decimal expansion of π. [Silva]

+ The smallest non-trivial palindromic prime of the form n^3+n^2+1. [Silva]

+ The odd digits of all two-digit primes sum to 151. [Silva]

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