1,211,257

317 × 3821

Starting at 1,211,257, the Collatz iteration reaches 1 after 235 steps. The first transition is 3633772; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 317 × 3821

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,215,396

Proper Divisor Sum 4,139

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #1211227 ← → #1211261

Radix Representation

Decimal	1211257
Binary	100100111101101111001 (21 bits)
Octal	0o4475571
Hexadecimal	0x127B79

Divisor Catalog (4)

1 317 3,821 1,211,257

Collatz Trajectory (235 steps to reach 1)

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

1,211,257 3,633,772 1,816,886 908,443 2,725,330 1,362,665 4,087,996 2,043,998 1,021,999 3,065,998 1,532,999 4,598,998 2,299,499 6,898,498 3,449,249 10,347,748 5,173,874 2,586,937 7,760,812 3,880,406 1,940,203 5,820,610 2,910,305 8,730,916 4,365,458 2,182,729 6,548,188 3,274,094 1,637,047 4,911,142 2,455,571 7,366,714 3,683,357 11,050,072 5,525,036 2,762,518 1,381,259 4,143,778 2,071,889 6,215,668 3,107,834 1,553,917 4,661,752 2,330,876 1,165,438 582,719 1,748,158 874,079 2,622,238 1,311,119 3,933,358 1,966,679 5,900,038 2,950,019 8,850,058 4,425,029 13,275,088 6,637,544 3,318,772 1,659,386

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