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[Home](./index.md) &gt; [rc-js-util](./rc-js-util.md) &gt; [\_F64](./rc-js-util._f64.md) &gt; [mantissaBits](./rc-js-util._f64.mantissabits.md)

## \_F64.mantissaBits property

**Signature:**

```typescript
static readonly mantissaBits = 52;
```