[17th Miss Regt]

10 to the 42nd power is 1 undecillion years, which is 1,000,000,000,000,000,000,000,000 years.

Correction: 10 to the 42nd power is 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000.

[Blennos]

I’ll take your word for it.

[omni-scientist]

I prefer the more compact Roman expression: X^XLII.

[Sirius Lee]

10 to the 42nd power is 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000.

Ah, a Dentillion. So named after Dent, Arther Dent.