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### `prime`, `lprime`

`prime(index)`
`lprime(index)`
  :: Returns a prime number.

return
  integer
index
  integer

- The two functions, `prime()` and `lprime()`, returns an element stored in the system table of prime numbers. Here, `index` is a non-negative integer and be used as an index for the prime tables. The function `prime()` can return one of 1900 primes up to 16381 indexed so that the smaller one has smaller index. The function `lprime()` can return one of 999 primes which are 8 digit sized and indexed so that the larger one has the smaller index. The two function always returns 0 for other indices.
- For more general function for prime generation, there is a `PARI` function `pari(nextprime,number)`.

    [95] prime(0);
    2
    [96] prime(1228);
    9973
    [97] lprime(0);
    99999989
    [98] lprime(999);
    0

`References`
  section `pari`.

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