7⁵ × 13

Prime Factor Structure

Factorization String 7^5 × 13

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 274,512

Proper Divisor Sum 56,021

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #218479 ← → #218509

1 7 13 49 91 343 637 2,401 4,459 16,807 31,213 218,491

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

218,491 655,474 327,737 983,212 491,606 245,803 737,410 368,705 1,106,116 553,058 276,529 829,588 414,794 207,397 622,192 311,096 155,548 77,774 38,887 116,662 58,331 174,994 87,497 262,492 131,246 65,623 196,870 98,435 295,306 147,653 442,960 221,480 110,740 55,370 27,685 83,056 41,528 20,764 10,382 5,191 15,574 7,787 23,362 11,681 35,044 17,522 8,761 26,284 13,142 6,571 19,714 9,857 29,572 14,786 7,393 22,180 11,090 5,545 16,636 8,318

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