405/392
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| Ratio | 405/392 |
| Factorization | 2-3 × 34 × 5 × 7-2 |
| Monzo | [-3 4 1 -2⟩ |
| Size in cents | 56.481904¢ |
| Name | greenwoodma |
| Color name | rry-2, ruruyo negative 2nd |
| FJS name | [math]\text{d}{-2}^{5}_{7,7}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 17.2765 |
| Weil height (log2 max(n, d)) | 17.3236 |
| Wilson height (sopfr (nd)) | 37 |
| Harmonic entropy (Shannon, [math]\sqrt{nd}[/math]) |
~4.41802 bits |
| Comma size | medium |
| open this interval in xen-calc | |
405/392, the greenwoodma, is a 7-limit medium comma. Tempering it out, this leads to the greenwoodmic temperaments.
Sagittal notation
In the Sagittal system, the downward version of this comma (possibly tempered) is represented by the sagittal and is called the 49/5 medium diesis, or 49/5M for short, because the simplest interval it notates is 49/5 = 7×7/5 (equiv. 49/40), as for example in C-E . The upward version is called 5/49M or 49/5M up and is represented by .