NotImplementedError: bounds checking is not supported for CUDA

Here is my code:

@njit( target=‘cuda’)
def funP():
a = 182841384165841685416854134135012345678901234567890123456789
b = 135481653441354138548413384135012345678901234567890123456789

return math.pow(a, b)
#######################

why I got this error ?