3 × 7 × 11 × 557

Prime Factor Structure

Factorization String 3 × 7 × 11 × 557

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 214,272

Proper Divisor Sum 85,605

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #128663 ← → #128669

1 3 7 11 21 33 77 231 557 1,671 3,899 6,127 11,697 18,381 42,889 128,667

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

128,667 386,002 193,001 579,004 289,502 144,751 434,254 217,127 651,382 325,691 977,074 488,537 1,465,612 732,806 366,403 1,099,210 549,605 1,648,816 824,408 412,204 206,102 103,051 309,154 154,577 463,732 231,866 115,933 347,800 173,900 86,950 43,475 130,426 65,213 195,640 97,820 48,910 24,455 73,366 36,683 110,050 55,025 165,076 82,538 41,269 123,808 61,904 30,952 15,476 7,738 3,869 11,608 5,804 2,902 1,451 4,354 2,177 6,532 3,266 1,633 4,900

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