[[127]] is prime.

Prime neighborhood: [[107]], [[109]], [[113]], [[127]], [[131]], [[137]], [[139]]

Special relations: cousin prime with [[131]].

Primes up to 127: [[2]], [[3]], [[5]], [[7]], [[11]], [[13]], [[17]], [[19]], [[23]], [[29]], [[31]], [[37]], [[41]], [[43]], [[47]], [[53]], [[59]], [[61]], [[67]], [[71]], [[73]], [[79]], [[83]], [[89]], [[97]], [[101]], [[103]], [[107]], [[109]], [[113]], [[127]] (31 total).

[[127]] is the centered hexagonal number # [[7]].

First 20 centered hexagonal numbers: [[1]], [[7]], [[19]], [[37]], [[61]], [[91]], [[127]], [[169]], [[217]], [[271]], [[331]], [[397]], [[469]], [[547]], [[631]], [[721]], [[817]], [[919]], [[1027]], [[1141]].

[[hz/127]] is closest to [[B2]] at [[127]] Hz (+49 cents).

Note class: [[B]], Octave: [[octave/2]].

• [[square]]: 16129

• [[square root]]: 11.2694

• [[cube]]: 2048383

• [[cube root]]: 5.0265

• [[natural log]] (ln): 4.8442

• [[base-10 log]] (log10): 2.1038

• [[base-2 log]] (log2): 6.9887