3 × 7 × 19 × 523

Prime Factor Structure

Factorization String 3 × 7 × 19 × 523

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 335,360

Proper Divisor Sum 126,683

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #208673 ← → #208687

1 3 7 19 21 57 133 399 523 1,569 3,661 9,937 10,983 29,811 69,559 208,677

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

208,677 626,032 313,016 156,508 78,254 39,127 117,382 58,691 176,074 88,037 264,112 132,056 66,028 33,014 16,507 49,522 24,761 74,284 37,142 18,571 55,714 27,857 83,572 41,786 20,893 62,680 31,340 15,670 7,835 23,506 11,753 35,260 17,630 8,815 26,446 13,223 39,670 19,835 59,506 29,753 89,260 44,630 22,315 66,946 33,473 100,420 50,210 25,105 75,316 37,658 18,829 56,488 28,244 14,122 7,061 21,184 10,592 5,296 2,648 1,324

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