At the onset of biblical history when God told Abraham to enumerate the stars of heaven, the aged patriarch (as the popular Christian children cartoon series Superbook portrays him) must have seized the abacus, the best computing tech of the time, to help him number his divinely promised descendants accurately.
Today, over 4,000 years later, that momentous mathematical 'equation' is still unsolved, despite the deployment of sophisticated space telescopes and supercomputers. Observers at the Hubble Space Telescope have so far mapped 2 trillion galaxies, each with an average of about 100 billion stars.