13 × 51521

Prime Factor Structure

Factorization String 13 × 51521

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 721,308

Proper Divisor Sum 51,535

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #669763 ← → #669787

1 13 51,521 669,773

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

669,773 2,009,320 1,004,660 502,330 251,165 753,496 376,748 188,374 94,187 282,562 141,281 423,844 211,922 105,961 317,884 158,942 79,471 238,414 119,207 357,622 178,811 536,434 268,217 804,652 402,326 201,163 603,490 301,745 905,236 452,618 226,309 678,928 339,464 169,732 84,866 42,433 127,300 63,650 31,825 95,476 47,738 23,869 71,608 35,804 17,902 8,951 26,854 13,427 40,282 20,141 60,424 30,212 15,106 7,553 22,660 11,330 5,665 16,996 8,498 4,249

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