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To find the number of possible universes, it is first important to find the largest possible universe. The universe, during Inflation, increased its size by a factor of e^{60} in a time of 10^{-32} s. The universe is 4.3\times 10^{17} s old. \frac { 4.3\times 10^{ 17 }s }{ 10^{ -32 }s } =4.3\times { 10 }^{ 49 }. { ({ e }^{ 60 }) }^{ 4.3\times { 10 }^{ 49 } } = { e }^{ 60\times 4.3\times { 10 }^{ 49 } } = { e }^{ {2.58\times 10}^{ 51 } }.

Before Inflation, the universe had a diameter of 7.7\times { 10 }^{ -30 }m. { 7.7\times { 10 }^{ -30 }m\times e }^{ { 2.58\times 10 }^{ 51 } }\approx { 10 }^{ 1.1204797633103898\times 10^{ 51 } }{ l }_{ p }. The factorial of this raised to the power of 8\times 10^{60} is practically the same, and hence this is the number of possible universes.

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