BigInt.toString() truncates value with power-of-two radices

[ingria]

Version

v20.5.1

Platform

Linux dev 5.15.0-89-generic # 99-Ubuntu SMP Mon Oct 30 20:42:41 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Subsystem

No response

What steps will reproduce the bug?

const i = 0x6aaf20fed58ba5e6db692909e78e5c5c6525e28d1cfa8bd22dc216729b4841b3;
const big = BigInt(i);

console.log('0x' + big.toString(16))

How often does it reproduce? Is there a required condition?

Radix value should be a power of 2 (2, 4, 8, 16, etc).

What is the expected behavior? Why is that the expected behavior?

The result is the same as the initial value (i):

"0x6aaf20fed58ba5e6db692909e78e5c5c6525e28d1cfa8bd22dc216729b4841b3"

What do you see instead?

Trailing digits are replaced with zeros:

"0x6aaf20fed58ba400000000000000000000000000000000000000000000000000"