5,215,817

79 × 103 × 641

Starting at 5,215,817, the Collatz iteration reaches 1 after 131 steps. The first transition is 15647452; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 79 × 103 × 641

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 5,341,440

Proper Divisor Sum 125,623

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #5215811 ← → #5215841

Radix Representation

Decimal	5215817
Binary	10011111001011001001001 (23 bits)
Octal	0o23713111
Hexadecimal	0x4F9649

Divisor Catalog (8)

1 79 103 641 8,137 50,639 66,023 5,215,817

Collatz Trajectory (131 steps to reach 1)

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

5,215,817 15,647,452 7,823,726 3,911,863 11,735,590 5,867,795 17,603,386 8,801,693 26,405,080 13,202,540 6,601,270 3,300,635 9,901,906 4,950,953 14,852,860 7,426,430 3,713,215 11,139,646 5,569,823 16,709,470 8,354,735 25,064,206 12,532,103 37,596,310 18,798,155 56,394,466 28,197,233 84,591,700 42,295,850 21,147,925 63,443,776 31,721,888 15,860,944 7,930,472 3,965,236 1,982,618 991,309 2,973,928 1,486,964 743,482 371,741 1,115,224 557,612 278,806 139,403 418,210 209,105 627,316 313,658 156,829 470,488 235,244 117,622 58,811 176,434 88,217 264,652 132,326 66,163 198,490

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