1,271,185

5 × 97 × 2621

Starting at 1,271,185, the Collatz iteration reaches 1 after 173 steps. The first transition is 3813556; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 97 × 2621

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 1,541,736

Proper Divisor Sum 270,551

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #1271183 ← → #1271197

Radix Representation

Decimal	1271185
Binary	100110110010110010001 (21 bits)
Octal	0o4662621
Hexadecimal	0x136591

Divisor Catalog (8)

1 5 97 485 2,621 13,105 254,237 1,271,185

Collatz Trajectory (173 steps to reach 1)

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

1,271,185 3,813,556 1,906,778 953,389 2,860,168 1,430,084 715,042 357,521 1,072,564 536,282 268,141 804,424 402,212 201,106 100,553 301,660 150,830 75,415 226,246 113,123 339,370 169,685 509,056 254,528 127,264 63,632 31,816 15,908 7,954 3,977 11,932 5,966 2,983 8,950 4,475 13,426 6,713 20,140 10,070 5,035 15,106 7,553 22,660 11,330 5,665 16,996 8,498 4,249 12,748 6,374 3,187 9,562 4,781 14,344 7,172 3,586 1,793 5,380 2,690 1,345

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