3 × 13 × 43 × 991

Prime Factor Structure

Factorization String 3 × 13 × 43 × 991

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,444,288

Proper Divisor Sum 782,381

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #1661899 ← → #1661917

1 3 13 39 43 129 559 991 1,677 2,973 12,883 38,649 42,613 127,839 553,969 1,661,907

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

1,661,907 4,985,722 2,492,861 7,478,584 3,739,292 1,869,646 934,823 2,804,470 1,402,235 4,206,706 2,103,353 6,310,060 3,155,030 1,577,515 4,732,546 2,366,273 7,098,820 3,549,410 1,774,705 5,324,116 2,662,058 1,331,029 3,993,088 1,996,544 998,272 499,136 249,568 124,784 62,392 31,196 15,598 7,799 23,398 11,699 35,098 17,549 52,648 26,324 13,162 6,581 19,744 9,872 4,936 2,468 1,234 617 1,852 926 463 1,390 695 2,086 1,043 3,130 1,565 4,696 2,348 1,174 587 1,762

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