## FANDOM

617 Pages

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.