# fallbackRandU256

> **fallbackRandU256**(): `bigint`

Defined in: [packages/synapse-core/src/utils/rand.ts:3](https://github.com/FilOzone/synapse-sdk/blob/6e1e96f2911e2d9feb7b6d6065d1dab12ef8158e/packages/synapse-core/src/utils/rand.ts#L3)

## Returns

`bigint`