Name a metric (SI) prefix

Prompt 5 of 7

24 accepted answers across 6 rarity tiers.

100 ptsOne in a Krillion1 answerShow answers

The rarest possible answer — almost no player finds it.

Quecto— 10^-30. Added in 2022. The smallest named SI prefix. Below yocto, below ronto. Absolute basement of the system.

85 ptsDeep Cut6 answersShow answers

Genuinely obscure. Most players never think of it.

Quetta— 10^30. The largest SI prefix as of 2022. Named to avoid confusion with existing words. Extremely obscure.
Ronto— Added in 2022. Most people who know SI prefixes still don't know this one.
Yocto
Yotta
Zepto
Zetta

60 ptsRare4 answersShow answers

Uncommon — only a minority of players land here.

30 ptsSchooler7 answersShow answers

A solid, middling pick shared with plenty of other players.

15 ptsToo Clever1 answerShow answers

An overthought pick that scores below the middle of the board.

Ronna— The 2022 addition everyone name-drops to sound current. 10^27. You have seen the press release.

10 ptsPlankton5 answersShow answers

The most common answer on the board.

Frequently Asked Questions

The rarest accepted picks on July 30, 2026 were Quecto, in the One in a Krillion tier worth 100 points.

This prompt from Dive #15 (July 30, 2026) accepts 24 answers across 6 rarity tiers, all listed on this page.