13 × 43 × 521

Prime Factor Structure

Factorization String 13 × 43 × 521

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 321,552

Proper Divisor Sum 30,313

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #291217 ← → #291253

1 13 43 521 559 6,773 22,403 291,239

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

291,239 873,718 436,859 1,310,578 655,289 1,965,868 982,934 491,467 1,474,402 737,201 2,211,604 1,105,802 552,901 1,658,704 829,352 414,676 207,338 103,669 311,008 155,504 77,752 38,876 19,438 9,719 29,158 14,579 43,738 21,869 65,608 32,804 16,402 8,201 24,604 12,302 6,151 18,454 9,227 27,682 13,841 41,524 20,762 10,381 31,144 15,572 7,786 3,893 11,680 5,840 2,920 1,460 730 365 1,096 548 274 137 412 206 103 310

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