What is the largest number system right now?

i remember something that was like 1e10e308, idk the name of it but i guess you can try it

Decimal.js / break_infinity.js both have 1e9e15
logarithmica_numerus_lite.js has 1e1.79e308
confractus_numerus.js has ee9e15
break_eternity.js has F1.79e308
OmegaNum.js has J9e15
ExpantaNum.js has K9e15

TMT (so most games) uses break_eternity.js
The only game (that I'm aware of) that actually reaches the limit of ExpantaNum.js is Endless Stairwell

Infinity
Eternity
break.reality.js - when you want bigger numbers, but not as high

ExpantaNum isn’t actually the biggest number its just the biggest number we can currently used with our 64 bit limit technically you can go bigger