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# A Primality Test

Do you have an integer you would like
to test for primality? If it is small (say less than 9007199254740991 = 2^{53} -
1), then try this script:

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

- The Prime Glossary's definition: Probable-Prime
- The Javascript program above is based on the page Strong probable-primality and a practical test.
- Probable primes--how probable?

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