3 × 7 × 13 × 631

Prime Factor Structure

Factorization String 3 × 7 × 13 × 631

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 283,136

Proper Divisor Sum 110,873

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #172259 ← → #172279

1 3 7 13 21 39 91 273 631 1,893 4,417 8,203 13,251 24,609 57,421 172,263

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

172,263 516,790 258,395 775,186 387,593 1,162,780 581,390 290,695 872,086 436,043 1,308,130 654,065 1,962,196 981,098 490,549 1,471,648 735,824 367,912 183,956 91,978 45,989 137,968 68,984 34,492 17,246 8,623 25,870 12,935 38,806 19,403 58,210 29,105 87,316 43,658 21,829 65,488 32,744 16,372 8,186 4,093 12,280 6,140 3,070 1,535 4,606 2,303 6,910 3,455 10,366 5,183 15,550 7,775 23,326 11,663 34,990 17,495 52,486 26,243 78,730 39,365

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