11² × 31 × 139

Prime Factor Structure

Factorization String 11^2 × 31 × 139

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 595,840

Proper Divisor Sum 74,451

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #521377 ← → #521393

1 11 31 121 139 341 1,529 3,751 4,309 16,819 47,399 521,389

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

521,389 1,564,168 782,084 391,042 195,521 586,564 293,282 146,641 439,924 219,962 109,981 329,944 164,972 82,486 41,243 123,730 61,865 185,596 92,798 46,399 139,198 69,599 208,798 104,399 313,198 156,599 469,798 234,899 704,698 352,349 1,057,048 528,524 264,262 132,131 396,394 198,197 594,592 297,296 148,648 74,324 37,162 18,581 55,744 27,872 13,936 6,968 3,484 1,742 871 2,614 1,307 3,922 1,961 5,884 2,942 1,471 4,414 2,207 6,622 3,311

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