37

This number is a prime.

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

+ The smallest prime p of the form (R(p)+1)/2, for R(p) the reversal of p. [Silva]

+ 3! * 7! minus 37 is a palindromic prime. [Silva]

+ 37 and its reversal are the only primes formed from a pair of cousin primes. [Silva]

+ The sum of the prime divisors of the two next numbers. [Silva]

+ The sum of the prime digits appearing in all previous primes. [Silva]

+ The emirp 37 divides the arithmetic average of the first 37 emirps. [Silva]

+ The smallest prime formed from odd prime digits. [Silva]

+ The only prime (emirp) which yields a palindromic prime of the form 37+73+3*7. [Silva]

(There are 2 curios for this number that have not yet been approved by an editor.)

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