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A115377 Numbers n such that the first n digits of sqrt(2) form a prime. 2

%I

%S 55,97,225,11260,11540

%N Numbers n such that the first n digits of sqrt(2) form a prime.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ConstantPrimes.html">Constant Primes</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PythagorassConstantDigits.html">Pythagoras's Constant Digits</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/IntegerSequencePrimes.html">Integer Sequence Primes</a>

%e First Pythagorean prime is 1414213562373095048801688724209698078569671875376948073, which has 55 digits.

%Y Cf. A002193.

%K nonn,base,more

%O 1,1

%A _Eric W. Weisstein_, Jan 21 2006

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Last modified January 30 07:19 EST 2023. Contains 359939 sequences. (Running on oeis4.)