[[804]] is not prime (composite). Want proof? :)

Full prime factorization: [[2]] * [[2]] * [[3]] * [[67]]

Factor pairs:

[[804]] = [[2]] * [[402]]

[[804]] = [[3]] * [[268]]

[[804]] = [[4]] * [[201]]

[[804]] = [[6]] * [[134]]

[[804]] = [[12]] * [[67]]

Proper divisors: [[2]], [[3]], [[4]], [[6]], [[12]], [[67]], [[134]], [[201]], [[268]], [[402]]

Primes up to 804: [[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]], [[131]], [[137]], [[139]], [[149]], [[151]], [[157]], [[163]], [[167]], [[173]], [[179]], [[181]], [[191]], [[193]], [[197]], [[199]], [[211]], [[223]], [[227]], [[229]], … (139 total).

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

The closest centered hexagonal numbers are [[721]] (index # [[16]]) and [[817]] (index # [[17]]).

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/804]] is closest to [[G5]] at [[804]] Hz (+44 cents).

Note class: [[G]], Octave: [[octave/5]].

• [[square]]: 646416

• [[square root]]: 28.3549

• [[cube]]: 519718464

• [[cube root]]: 9.2986

• [[natural log]] (ln): 6.6896

• [[base-10 log]] (log10): 2.9053

• [[base-2 log]] (log2): 9.6511