# fallbackRandU256

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

Defined in: [packages/synapse-core/src/utils/rand.ts:3](https://github.com/FilOzone/synapse-sdk/blob/5e9df029417d95928e523b01a29bf523e42db418/packages/synapse-core/src/utils/rand.ts#L3)

## Returns

`bigint`