Countercentisma
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| Factorization | 2-1 × 3-3300 × 52700 × 11-300 |
| Monzo | [-1 -3300 2700 0 -300⟩ |
| Size in cents | 0.14186985¢ |
| Name | countercentisma |
| Special properties | reduced |
| Tenney height (log2 nd) | 12538.4 |
| Weil height (log2 max(n, d)) | 12538.4 |
| Wilson height (sopfr (nd)) | 26702 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~2.39758 bits |
| Comma size | unnoticeable |
| open this interval in xen-calc | |
The countercentisma is an 11-limit unnoticeable comma which is the difference between 300 4-cent commas and the octave. Tempering out this comma results in the countercentismic temperament in the full 11-limit or the countercentic temperament in the 2.3.5.11 subgroup, which are both extreme microtemperaments that make the 4-cent comma (which is 4.0004729 cents) exactly 4 cents or 1 step of 300edo. The comma was named by CompactStar in 2024 because it is analogous to the centisma also named by him, which equates 17/12 to exactly 603 cents and 289/288 (the semitonisma or septendecimal 6-cents comma) to exactly 6 cents.