[[49]] is not prime (composite): [[7]] * [[7]]

Prime neighborhood: [[41]], [[43]], [[47]], [[49]], [[53]], [[59]], [[61]]

Prime gap: 6 (interval [[47]] to [[53]])

Primes up to 49: [[2]], [[3]], [[5]], [[7]], [[11]], [[13]], [[17]], [[19]], [[23]], [[29]], [[31]], [[37]], [[41]], [[43]], [[47]] (15 total).

[[49]] is not a centered hexagonal number.

The closest centered hexagonal numbers are [[37]] (index # [[4]]) and [[61]] (index # [[5]]).

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/49]] is closest to [[G1]] at [[49]] Hz (perfect pitch).

Note class: [[G]], Octave: [[octave/1]].

• [[square]]: 2401

• [[square root]]: 7.0000

• [[cube]]: 117649

• [[cube root]]: 3.6593

• [[natural log]] (ln): 3.8918

• [[base-10 log]] (log10): 1.6902

• [[base-2 log]] (log2): 5.6147