# fallbackRandU256

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

Defined in: [packages/synapse-core/src/utils/rand.ts:3](https://github.com/FilOzone/synapse-sdk/blob/cc1ee39d414e890e67823ab84dd4206bf2a06490/packages/synapse-core/src/utils/rand.ts#L3)

## Returns

`bigint`