2 × 29 × 43 × 257

Prime Factor Structure

Factorization String 2 × 29 × 43 × 257

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,021,680

Proper Divisor Sum 380,722

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #640957 ← → #640963

1 2 29 43 58 86 257 514 1,247 2,494 7,453 11,051 14,906 22,102 320,479 640,958

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

640,958 320,479 961,438 480,719 1,442,158 721,079 2,163,238 1,081,619 3,244,858 1,622,429 4,867,288 2,433,644 1,216,822 608,411 1,825,234 912,617 2,737,852 1,368,926 684,463 2,053,390 1,026,695 3,080,086 1,540,043 4,620,130 2,310,065 6,930,196 3,465,098 1,732,549 5,197,648 2,598,824 1,299,412 649,706 324,853 974,560 487,280 243,640 121,820 60,910 30,455 91,366 45,683 137,050 68,525 205,576 102,788 51,394 25,697 77,092 38,546 19,273 57,820 28,910 14,455 43,366 21,683 65,050 32,525 97,576 48,788 24,394

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