3 × 7 × 19 × 181

Prime Factor Structure

Factorization String 3 × 7 × 19 × 181

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 116,480

Proper Divisor Sum 44,261

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #72211 ← → #72221

1 3 7 19 21 57 133 181 399 543 1,267 3,439 3,801 10,317 24,073 72,219

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

72,219 216,658 108,329 324,988 162,494 81,247 243,742 121,871 365,614 182,807 548,422 274,211 822,634 411,317 1,233,952 616,976 308,488 154,244 77,122 38,561 115,684 57,842 28,921 86,764 43,382 21,691 65,074 32,537 97,612 48,806 24,403 73,210 36,605 109,816 54,908 27,454 13,727 41,182 20,591 61,774 30,887 92,662 46,331 138,994 69,497 208,492 104,246 52,123 156,370 78,185 234,556 117,278 58,639 175,918 87,959 263,878 131,939 395,818 197,909 593,728

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