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# core::felt252

`felt252` is the basic field element used in Cairo.
It corresponds to an integer in the range 0 ≤ x \< P where P is
a very large prime number currently equal to 2^251 + 17⋅2^192 + 1.
Any operation that uses `felt252` will be computed modulo P.

## Signature

```rust theme={null}
pub extern type felt252;
```