7 × 19 × 61 × 79

Prime Factor Structure

Factorization String 7 × 19 × 61 × 79

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 793,600

Proper Divisor Sum 152,673

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #640919 ← → #640933

1 7 19 61 79 133 427 553 1,159 1,501 4,819 8,113 10,507 33,733 91,561 640,927

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

640,927 1,922,782 961,391 2,884,174 1,442,087 4,326,262 2,163,131 6,489,394 3,244,697 9,734,092 4,867,046 2,433,523 7,300,570 3,650,285 10,950,856 5,475,428 2,737,714 1,368,857 4,106,572 2,053,286 1,026,643 3,079,930 1,539,965 4,619,896 2,309,948 1,154,974 577,487 1,732,462 866,231 2,598,694 1,299,347 3,898,042 1,949,021 5,847,064 2,923,532 1,461,766 730,883 2,192,650 1,096,325 3,288,976 1,644,488 822,244 411,122 205,561 616,684 308,342 154,171 462,514 231,257 693,772 346,886 173,443 520,330 260,165 780,496 390,248 195,124 97,562 48,781 146,344

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