3 × 7 × 31 × 643

Prime Factor Structure

Factorization String 3 × 7 × 31 × 643

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 659,456

Proper Divisor Sum 240,863

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #418559 ← → #418597

1 3 7 21 31 93 217 643 651 1,929 4,501 13,503 19,933 59,799 139,531 418,593

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

418,593 1,255,780 627,890 313,945 941,836 470,918 235,459 706,378 353,189 1,059,568 529,784 264,892 132,446 66,223 198,670 99,335 298,006 149,003 447,010 223,505 670,516 335,258 167,629 502,888 251,444 125,722 62,861 188,584 94,292 47,146 23,573 70,720 35,360 17,680 8,840 4,420 2,210 1,105 3,316 1,658 829 2,488 1,244 622 311 934 467 1,402 701 2,104 1,052 526 263 790 395 1,186 593 1,780 890 445

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