Factor Num Up
WARNING: SPOILERS AHEAD IF YOU DIDN'T BEAT THE GAME.

Factors
Factors increase your production, which can be upgraded with Number. Upgrading will increases its respective factor by +0.5x.

Prime
Having enough Number allows you to embrace the Prime. This resets your progress, in a exchange of faster productions and new features.

[1] Buyer
Buyer allows you select multiple things at once, found in the Main tab. Later on, they could be found anywhere.
At Prime #3: You can select priorities for each Buyer, which adjusts the order of Buyers.
At Prime #6: You can automate the Buyer. You can speed up by progressing.

[2] Upgrades
You can spend Number on upgrades, which take time to implement. All upgrades have levels, so make your plan on upgrading!

[4] Boosts
Number gives you Fuel, which is assignable into boosts, as equal as Factors. They start at least Factor and move to better Factors on upgrading.

[5] Challenges
You can start a Challenge which gives nerfs, but reset your progress until you exit. On completing, you will gain a completion based on a specific feature it impacts. There are several difficulties for Challenges; and completing the harder one gives free completions.