As it turns out, Math.js doesn't support arbitrary precision calculations with complex numbers. This is because it is using libraries complex-js [1] and bignumb

As it turns out, Math.js doesn't support arbitrary precision calculations with complex numbers. This is because it is using libraries complex-js [1] and bignumber.js [2], which in turn also don't support arbitrary precision calculations with complex numbers. This situation will improve in the future. See the Math.js issue [3]. [1] https://github.com/patrickroberts/complex-js https://github.com/patrickroberts/complex-js [2] https://github.com/MikeMcl/bignumber.js/ https://github.com/MikeMcl/bignumber.js/ [3] https://github.com/josdejong/mathjs/issues/694 https://github.com/josdejong/mathjs/issues/694