2 × 13² × 643

Prime Factor Structure

Factorization String 2 × 13^2 × 643

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 353,556

Proper Divisor Sum 136,222

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #217333 ← → #217337

1 2 13 26 169 338 643 1,286 8,359 16,718 108,667 217,334

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

217,334 108,667 326,002 163,001 489,004 244,502 122,251 366,754 183,377 550,132 275,066 137,533 412,600 206,300 103,150 51,575 154,726 77,363 232,090 116,045 348,136 174,068 87,034 43,517 130,552 65,276 32,638 16,319 48,958 24,479 73,438 36,719 110,158 55,079 165,238 82,619 247,858 123,929 371,788 185,894 92,947 278,842 139,421 418,264 209,132 104,566 52,283 156,850 78,425 235,276 117,638 58,819 176,458 88,229 264,688 132,344 66,172 33,086 16,543 49,630

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