3 × 7 × 13 × 31 × 61

Prime Factor Structure

Factorization String 3 × 7 × 13 × 31 × 61

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 888,832

Proper Divisor Sum 372,589

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #516233 ← → #516247

1 3 7 13 21 31 39 61 91 93 183 217 273 403 427 651 793 1,209 1,281 1,891 2,379 2,821 5,551 5,673 8,463 13,237 16,653 24,583 39,711 73,749 172,081 516,243

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

516,243 1,548,730 774,365 2,323,096 1,161,548 580,774 290,387 871,162 435,581 1,306,744 653,372 326,686 163,343 490,030 245,015 735,046 367,523 1,102,570 551,285 1,653,856 826,928 413,464 206,732 103,366 51,683 155,050 77,525 232,576 116,288 58,144 29,072 14,536 7,268 3,634 1,817 5,452 2,726 1,363 4,090 2,045 6,136 3,068 1,534 767 2,302 1,151 3,454 1,727 5,182 2,591 7,774 3,887 11,662 5,831 17,494 8,747 26,242 13,121 39,364 19,682

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