3 × 17 × 421

Prime Factor Structure

Factorization String 3 × 17 × 421

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 30,384

Proper Divisor Sum 8,913

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #21467 ← → #21481

1 3 17 51 421 1,263 7,157 21,471

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

21,471 64,414 32,207 96,622 48,311 144,934 72,467 217,402 108,701 326,104 163,052 81,526 40,763 122,290 61,145 183,436 91,718 45,859 137,578 68,789 206,368 103,184 51,592 25,796 12,898 6,449 19,348 9,674 4,837 14,512 7,256 3,628 1,814 907 2,722 1,361 4,084 2,042 1,021 3,064 1,532 766 383 1,150 575 1,726 863 2,590 1,295 3,886 1,943 5,830 2,915 8,746 4,373 13,120 6,560 3,280 1,640 820

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