13² × 23 × 211

Prime Factor Structure

Factorization String 13^2 × 23 × 211

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 931,104

Proper Divisor Sum 110,947

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #820133 ← → #820163

1 13 23 169 211 299 2,743 3,887 4,853 35,659 63,089 820,157

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

820,157 2,460,472 1,230,236 615,118 307,559 922,678 461,339 1,384,018 692,009 2,076,028 1,038,014 519,007 1,557,022 778,511 2,335,534 1,167,767 3,503,302 1,751,651 5,254,954 2,627,477 7,882,432 3,941,216 1,970,608 985,304 492,652 246,326 123,163 369,490 184,745 554,236 277,118 138,559 415,678 207,839 623,518 311,759 935,278 467,639 1,402,918 701,459 2,104,378 1,052,189 3,156,568 1,578,284 789,142 394,571 1,183,714 591,857 1,775,572 887,786 443,893 1,331,680 665,840 332,920 166,460 83,230 41,615 124,846 62,423 187,270

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