3 × 13 × 523

Prime Factor Structure

Factorization String 3 × 13 × 523

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 29,344

Proper Divisor Sum 8,947

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #20393 ← → #20399

1 3 13 39 523 1,569 6,799 20,397

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

20,397 61,192 30,596 15,298 7,649 22,948 11,474 5,737 17,212 8,606 4,303 12,910 6,455 19,366 9,683 29,050 14,525 43,576 21,788 10,894 5,447 16,342 8,171 24,514 12,257 36,772 18,386 9,193 27,580 13,790 6,895 20,686 10,343 31,030 15,515 46,546 23,273 69,820 34,910 17,455 52,366 26,183 78,550 39,275 117,826 58,913 176,740 88,370 44,185 132,556 66,278 33,139 99,418 49,709 149,128 74,564 37,282 18,641 55,924 27,962

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