# fallbackRandU256

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

Defined in: [packages/synapse-core/src/utils/rand.ts:3](https://github.com/FilOzone/synapse-sdk/blob/b36c8f99c6e2a9d4d60368a773e5052e196cb6e5/packages/synapse-core/src/utils/rand.ts#L3)

## Returns

`bigint`