13 × 197 × 251

Prime Factor Structure

Factorization String 13 × 197 × 251

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 698,544

Proper Divisor Sum 55,733

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #642809 ← → #642833

1 13 197 251 2,561 3,263 49,447 642,811

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

642,811 1,928,434 964,217 2,892,652 1,446,326 723,163 2,169,490 1,084,745 3,254,236 1,627,118 813,559 2,440,678 1,220,339 3,661,018 1,830,509 5,491,528 2,745,764 1,372,882 686,441 2,059,324 1,029,662 514,831 1,544,494 772,247 2,316,742 1,158,371 3,475,114 1,737,557 5,212,672 2,606,336 1,303,168 651,584 325,792 162,896 81,448 40,724 20,362 10,181 30,544 15,272 7,636 3,818 1,909 5,728 2,864 1,432 716 358 179 538 269 808 404 202 101 304 152 76 38 19

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