3 × 19 × 37 × 61

Prime Factor Structure

Factorization String 3 × 19 × 37 × 61

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 188,480

Proper Divisor Sum 59,831

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #128629 ← → #128657

1 3 19 37 57 61 111 183 703 1,159 2,109 2,257 3,477 6,771 42,883 128,649

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

128,649 385,948 192,974 96,487 289,462 144,731 434,194 217,097 651,292 325,646 162,823 488,470 244,235 732,706 366,353 1,099,060 549,530 274,765 824,296 412,148 206,074 103,037 309,112 154,556 77,278 38,639 115,918 57,959 173,878 86,939 260,818 130,409 391,228 195,614 97,807 293,422 146,711 440,134 220,067 660,202 330,101 990,304 495,152 247,576 123,788 61,894 30,947 92,842 46,421 139,264 69,632 34,816 17,408 8,704 4,352 2,176 1,088 544 272 136

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