bc cannot calculate very big number

Hello,

OpenBSD bc(1) is unable to calculate very big number,

for example, (1024*1024)^(1024*1024) run for an hour and still cannot

give me the result.

It just use about 11M of memory and 100% CPU.

Gavin Howard's bc port do it in 2 minutes

GNU bc on Linux do it in 5 minutes.

I'm sending this email from a phone, apologize for poor formatting and

no full dmesg.

cpu0: Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz, 3192.89 MHz

Dell Inc. OptiPlex 9020

spdmem0 at iic0 addr 0x50: 2GB DDR3 SDRAM PC3-12800
spdmem1 at iic0 addr 0x51: 2GB DDR3 SDRAM PC3-12800
spdmem2 at iic0 addr 0x52: 2GB DDR3 SDRAM PC3-12800
spdmem3 at iic0 addr 0x53: 2GB DDR3 SDRAM PC3-12800