3 × 7 × 13² × 19

Prime Factor Structure

Factorization String 3 × 7 × 13^2 × 19

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 117,120

Proper Divisor Sum 49,689

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #67429 ← → #67433

1 3 7 13 19 21 39 57 91 133 169 247 273 399 507 741 1,183 1,729 3,211 3,549 5,187 9,633 22,477 67,431

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

67,431 202,294 101,147 303,442 151,721 455,164 227,582 113,791 341,374 170,687 512,062 256,031 768,094 384,047 1,152,142 576,071 1,728,214 864,107 2,592,322 1,296,161 3,888,484 1,944,242 972,121 2,916,364 1,458,182 729,091 2,187,274 1,093,637 3,280,912 1,640,456 820,228 410,114 205,057 615,172 307,586 153,793 461,380 230,690 115,345 346,036 173,018 86,509 259,528 129,764 64,882 32,441 97,324 48,662 24,331 72,994 36,497 109,492 54,746 27,373 82,120 41,060 20,530 10,265 30,796 15,398

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.