3 × 13 × 139 × 397

Prime Factor Structure

Factorization String 3 × 13 × 139 × 397

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,120,320

Proper Divisor Sum 968,183

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #2152127 ← → #2152153

1 3 13 39 139 397 417 1,191 1,807 5,161 5,421 15,483 55,183 165,549 717,379 2,152,137

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

2,152,137 6,456,412 3,228,206 1,614,103 4,842,310 2,421,155 7,263,466 3,631,733 10,895,200 5,447,600 2,723,800 1,361,900 680,950 340,475 1,021,426 510,713 1,532,140 766,070 383,035 1,149,106 574,553 1,723,660 861,830 430,915 1,292,746 646,373 1,939,120 969,560 484,780 242,390 121,195 363,586 181,793 545,380 272,690 136,345 409,036 204,518 102,259 306,778 153,389 460,168 230,084 115,042 57,521 172,564 86,282 43,141 129,424 64,712 32,356 16,178 8,089 24,268 12,134 6,067 18,202 9,101 27,304 13,652

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