# iterPrimesSeq > Create an iterator which generates a sequence of [prime numbers][oeis-a000040].
## Usage ```javascript var iterPrimesSeq = require( '@stdlib/math/iter/sequences/primes' ); ``` #### iterPrimesSeq( \[options] ) Returns an iterator which generates a sequence of prime numbers. ```javascript var it = iterPrimesSeq(); // returns var v = it.next().value; // returns 2 v = it.next().value; // returns 3 v = it.next().value; // returns 5 v = it.next().value; // returns 7 v = it.next().value; // returns 11 // ... ``` The returned iterator protocol-compliant object has the following properties: - **next**: function which returns an iterator protocol-compliant object containing the next iterated value (if one exists) assigned to a `value` property and a `done` property having a `boolean` value indicating whether the iterator is finished. - **return**: function which closes an iterator and returns a single (optional) argument in an iterator protocol-compliant object. The function supports the following `options`: - **iter**: number of iterations. Default: `245181918813464`. By default, the function returns a finite iterator to avoid exceeding the maximum safe double-precision floating-point integer. To adjust the number of iterations, set the `iter` option. ```javascript var opts = { 'iter': 2 }; var it = iterPrimesSeq( opts ); // returns var v = it.next().value; // returns 2 v = it.next().value; // returns 3 var bool = it.next().done; // returns true ```
## Notes - If an environment supports `Symbol.iterator`, the returned iterator is iterable.
## Examples ```javascript var iterPrimesSeq = require( '@stdlib/math/iter/sequences/primes' ); // Create an iterator: var opts = { 'iter': 100 }; var it = iterPrimesSeq( opts ); // Perform manual iteration... var v; while ( true ) { v = it.next(); if ( v.done ) { break; } console.log( v.value ); } ```
[oeis-a000040]: https://oeis.org/A000040