1,266,491

1266491

Starting at 1,266,491, the Collatz iteration reaches 1 after 155 steps. The first transition is 3799474; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 1266491

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 1,266,492

Proper Divisor Sum 1

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1266487 ← → #1266493

Radix Representation

Decimal	1266491
Binary	100110101001100111011 (21 bits)
Octal	0o4651473
Hexadecimal	0x13533B

Divisor Catalog (2)

1 1,266,491

Collatz Trajectory (155 steps to reach 1)

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

1,266,491 3,799,474 1,899,737 5,699,212 2,849,606 1,424,803 4,274,410 2,137,205 6,411,616 3,205,808 1,602,904 801,452 400,726 200,363 601,090 300,545 901,636 450,818 225,409 676,228 338,114 169,057 507,172 253,586 126,793 380,380 190,190 95,095 285,286 142,643 427,930 213,965 641,896 320,948 160,474 80,237 240,712 120,356 60,178 30,089 90,268 45,134 22,567 67,702 33,851 101,554 50,777 152,332 76,166 38,083 114,250 57,125 171,376 85,688 42,844 21,422 10,711 32,134 16,067 48,202

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