The book is now available! A Primality Test
(another Prime Pages' Curiosity)
Prime Curios!
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The nth Prime Page will now find any of the first 2.623˙1015 primes or π(x) for x up to 1017.

Do you have an integer you would like to test for primality? If it is small (say less than 9007199254740991 = 253 - 1), then try this script:

Is prime?
For larger numbers try Dario Alpern's exceptional on-line routine to factor and prove primality. Other useful links include

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