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The nth Prime Page will now find any of the first 2.623˙10^{15} primes or
π(x) for x up to 10^{17}. Single Curio View: (Seek other curios for this number) The largest Pell number (coincidentally prime) of the form x^{2} + 1. Note that 5 = 2^{2} + 1, where 1 and 2 are the two other Pell numbers of this form. [Capelle]
Submitted: 20090630 07:29:37; Last Modified: 20090630 12:47:34.
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