3³ × 23 × 1031

Prime Factor Structure

Factorization String 3^3 × 23 × 1031

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 990,720

Proper Divisor Sum 350,469

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #640249 ← → #640259

1 3 9 23 27 69 207 621 1,031 3,093 9,279 23,713 27,837 71,139 213,417 640,251

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

640,251 1,920,754 960,377 2,881,132 1,440,566 720,283 2,160,850 1,080,425 3,241,276 1,620,638 810,319 2,430,958 1,215,479 3,646,438 1,823,219 5,469,658 2,734,829 8,204,488 4,102,244 2,051,122 1,025,561 3,076,684 1,538,342 769,171 2,307,514 1,153,757 3,461,272 1,730,636 865,318 432,659 1,297,978 648,989 1,946,968 973,484 486,742 243,371 730,114 365,057 1,095,172 547,586 273,793 821,380 410,690 205,345 616,036 308,018 154,009 462,028 231,014 115,507 346,522 173,261 519,784 259,892 129,946 64,973 194,920 97,460 48,730 24,365

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