7 × 13² × 439

Prime Factor Structure

Factorization String 7 × 13^2 × 439

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 644,160

Proper Divisor Sum 124,823

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #519307 ← → #519349

1 7 13 91 169 439 1,183 3,073 5,707 39,949 74,191 519,337

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

519,337 1,558,012 779,006 389,503 1,168,510 584,255 1,752,766 876,383 2,629,150 1,314,575 3,943,726 1,971,863 5,915,590 2,957,795 8,873,386 4,436,693 13,310,080 6,655,040 3,327,520 1,663,760 831,880 415,940 207,970 103,985 311,956 155,978 77,989 233,968 116,984 58,492 29,246 14,623 43,870 21,935 65,806 32,903 98,710 49,355 148,066 74,033 222,100 111,050 55,525 166,576 83,288 41,644 20,822 10,411 31,234 15,617 46,852 23,426 11,713 35,140 17,570 8,785 26,356 13,178 6,589 19,768

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