216217

Prime Factor Structure

Factorization String 216217

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 216,218

Proper Divisor Sum 1

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #216211 ← → #216233

1 216,217

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

216,217 648,652 324,326 162,163 486,490 243,245 729,736 364,868 182,434 91,217 273,652 136,826 68,413 205,240 102,620 51,310 25,655 76,966 38,483 115,450 57,725 173,176 86,588 43,294 21,647 64,942 32,471 97,414 48,707 146,122 73,061 219,184 109,592 54,796 27,398 13,699 41,098 20,549 61,648 30,824 15,412 7,706 3,853 11,560 5,780 2,890 1,445 4,336 2,168 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

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