17 × 139 × 271

Prime Factor Structure

Factorization String 17 × 139 × 271

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 685,440

Proper Divisor Sum 45,067

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #640369 ← → #640411

1 17 139 271 2,363 4,607 37,669 640,373

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

640,373 1,921,120 960,560 480,280 240,140 120,070 60,035 180,106 90,053 270,160 135,080 67,540 33,770 16,885 50,656 25,328 12,664 6,332 3,166 1,583 4,750 2,375 7,126 3,563 10,690 5,345 16,036 8,018 4,009 12,028 6,014 3,007 9,022 4,511 13,534 6,767 20,302 10,151 30,454 15,227 45,682 22,841 68,524 34,262 17,131 51,394 25,697 77,092 38,546 19,273 57,820 28,910 14,455 43,366 21,683 65,050 32,525 97,576 48,788 24,394

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