More about Antimatter Dimensions:
General Info: DimensionsTicksAchievements
Pre-Infinity: Soft ResetDimensional SacrificeAntimatter Galaxy
Pre-eternity: InfinityInfinity UpgradesChallengesAutobuyersBreaking InfinityInfinity DimensionsReplicanti
Post-eternity: EternityEternity MilestonesTime DimensionsTime StudiesEternity UpgradesEternity ChallengesTime Dilation
Misc: GuideTerminologyCheating
Upon reaching Eternity, you will unlock some upgrades boosting Infinity Dimensions and Time Dimensions. These cost EP to buy, earned from doing eternities.
Effect Cost (EP) Details
Infinity Dimensions multiplier based on unspent EP (x+1) 5 where x = unspent EP
You gain Infinity Dimension multiplier based on eternities ((x/200)^log4(2x)) 10 (This has a soft cap at 100,000 eternities.)


where A = # of Eternities (max 100,000)

and B = # of Eternities - 100,000

In other words:

Below 100,000 eternities: (A/200+1)log4(2*A+1)

Above 100,000 eternities: [(1252/2)log4(200001)

4.201e24] * (B/200+1)*log4(2B+1)

Infinity Dimensions multiplier based on sum of Infinity Challenge times 50000 230/max(i,0.61)[1]Cap: 6.379e14x
Your achievement bonus affects Time Dimensions 1e16 Bonus multiplier, seen in achievements
Time Dimensions are multiplied by your unspent time theorems 1e40 min 1
Time Dimensions are multiplied by days played 1e50 not rounded (12 hours = 0.5x multiplier)
  1. This is actually programmed to cap at 0.75 with the "Never again" achievement to reduce it to 0.61. However, because you obtain "Never again" once you reach 0.75, the cap of 0.75 can be ignored completely.

x5 EP Multiplier Edit

Unlike the IP Multipliers, you can buy EP multipliers without buying all 6 upgrades. It has a base cost of 500 EP and the price increases depending on the price of the upgrade. Once the price of the upgrade reaches a certain value, the price will be recalculated with the new price multiplier, increasing the price with each new recalculation.

Price End Increase Starts after Starting Price
1e100 EP x50 0 purchases 500 EP
1.79e308 EP x100 58 purchases 5e118 EP
1e1300 EP x500 153 purchases 4.38e415 EP
1e4000 EP x1000 481 purchases 5e1446 EP

After 1333 purchases (5e4001 EP) the cost formula changes to


where n is the amount of purchases.

This doesn't have a large price jump when you first reach it, but it scales the price extremely quickly as more upgrades are bought.